This Week at The Classical Station

(Violin Lessons by Elmer Borlongan, 2006)

Music conveys a prophetic message, revealing a higher form of life towards which mankind evolves.

~ Arnold Schoenberg

This Week at The Classical Station

by Chrissy Keuper


Saturday and Sunday, 20-21 September 2025

It’s the weekend! Come fill it with some fantastic music.

 

On the menu for this weekend:

Join Peggy Powell at 1pm ET for Saturday On Point, your weekly spotlight on classical music for dancers on the stage. This week, a recording of the Malmo Symphony Orchestra performing Hugo Alfven’s three-act ballet, The Mountain King.

At 6pm ET, Haydn Jones has more of your requests and dedications on the Saturday Evening Request Program.

The playlist is right here
You can make requests and dedications for next week’s programs here

 

Start your sacred Sunday morning at 7:30am ET with Sing For Joy from St. Olaf College, followed at 8am ET by James Steelmon and Great Sacred Music, featuring the Holland Boys’ Choir, the Russian Chamber Philharmonic St. Petersburg, and the Czech Philharmonic Orchestra & Choir with works by Ernest Bloch, Darius Milhaud, Max Bruch, and others.

And at 6pm ET, Seth Taylor is filling in for Tom Hayakawa on Preview!, highlighting new and recent classical releases. This week, recordings from the London Symphony under Gianandrea Noseda with Sergei Prokofiev’s Symphony No. 1, the Classical Symphony.

 

 

On these dates in the history of classical music:

Nils Frahm, c. 2021. (Courtesy of Nils Frahm)

 

 

A very Happy Birthday to German keyboardist and composer Nils Frahm, born September 20, 1982 in Hamburg. Frahm was introduced to music through his father (a photographer and designer for ECM Records) and studied classical piano. He was introduced to mixing boards and music production in school and combines classical and electronic music in his recordings and performances, both solo and collaborative.

 

 

Yuji Takahashi. (Courtesy of Wikimedia Commons)

And a very Happy Birthday to Japanese pianist and composer Yūji Takahashi, born in Tokyo on September 21, 1938. Takahashi attended Toho Gakuen School of Music and made his public debut as a pianist in 1960, then received a Ford Foundation grant to study in West Berlin and a Rockefeller Foundation scholarship to study in New York. He is known for his works for voice and traditional Japanese instruments and for his recordings of works by contemporary composers, including John Cage and Toru Takemitsu. Takahashi has also performed as a soloist with the London Symphony Orchestra, New York Philharmonic, Boston Symphony, and a number of other premiere orchestras, and he taught piano at Indiana University and the San Francisco Conservatory of Music.


Friday, 19 September 2025

It’s Friday, Listeners!

That means it’s time to play what YOU have chosen for All-Request Friday (and we’ll do it again tomorrow on the Saturday Evening Request Program).
Join us to hear what you’ve chosen.

What’s on the playlist?
I want to make a request for next week’s shows!

 

On this date in the history of classical music:

Blanche Thebom, c. 1954. (Courtesy of Wikimedia Commons)

It’s the birthdate of American mezzo-soprano Blanche Thebom, born in 1919 in Monessen, Pennsylvania, and raised in Canton, Ohio. Thebom was a ballet student in childhood (and throughout her life) and a singer in her church choir. She was on a ship with her parents to visit family in Sweden when her singing was overheard by pianist Kosti Vehanen, who was the accompanist and vocal coach for Marian Anderson. Vehanen was highly impressed and arranged for Thebom to receive voice training and to sign on with a talent manager in New York. Her first appearance as a soloist was in 1941 with the Philadelphia Orchestra and University of Pennsylvania Glee Club under Eugene Ormandy, which set up a three-year tour of the U.S. in which she sang in concerts and recitals, and then her professional opera debut in 1944 with the Metropolitan Opera (an association that lasted 22 years). Thebom was among the first American opera singers to be internationally famous, and she was praised for her velvety and dramatic voice and diverse repertoire; she appeared with many opera companies all over the world and also appeared in films. She retired from performance in 1967; worked in Atlanta as an opera director; and taught voice both privately and as music faculty of the University of Arkansas and San Francisco State University. Thebom was also a co-founder of the Opera Arts Training Program of the San Francisco Girls Chorus and served on the board of the Metropolitan Opera for nearly 40 years.


Thursday, 18 September 2025

A very merry Friday Eve to you, Listeners!

 

 

We celebrate at 7pm ET with Thursday Night Opera House** and a 1981 recording of Claudio Scimone conducting I Solisti Veneti, the Cora Filarmonico di Paraga, and legendary soloists in Giocchino Rossini’s L’Italiana in Algeri (The Italian Girl in Algiers).

**Archival broadcast from 2006 by late TNOH host Al Ruocchio.

 

On this day in classical music history:

Francesca Caccini is widely believed to be the subject of The Lute Player by Orazio Gentileschi, c. 1612-1620. (Courtesy of Wikimedia Commons)

It’s the birthdate of Italian singer, lutenist, and composer Francesca Caccini in 1587 in Florence. Caccini received her early education in classical and modern languages, literature, mathematics, and music, and is known to have been an accomplished singer who performed for the Medici court. Although only a bit of her music survives, Caccini was documented as a prolific composer and her opera-ballet La liberazione di Ruggiero is believed to be the oldest opera composed by a woman. She was a teacher, singer, rehearsal coach, and composer in the Medici court until at least 1641.

 

 


Wednesday, 17 September 2025

Wednesday = Wonderful Music, right here.

 

On this date in the history of classical music:

Désiré Emile Inghelbrecht. (Photo year and photographer unknown – Courtesy of Bibliothèque nationale de France)

It’s the birthdate of French composer and conductor Désiré-Émile Inghelbrecht in 1880 in Paris. Inghelbrecht began studies in violin at the Conservatoire de Paris when he was seven years old, but was expelled as a teenager for performing in local cafes. The move only inspired Inghelbrecht as a performer and he was named second violin in the Concerts de l’Opéra orchestra and a substitute conductor for his friend Pierre Monteux, then conductor of the Concerts Berlioz. Inghelbrecht was appointed as director of the new Théâtre des Champs-Élysées in 1913; founded the Concerts Pleyel which focused on music of the 16th to 18th centuries; was named music director of the Opéra-Comique in 1924; conducted the Concerts Pasdeloup and the Opera d’Alger; and was asked to form a national radio orchestra in 1934, which became the Orchestre National de la Radiodiffusion Française (ONF) and eventually the Orchestre Nationale de France. He was also conductor of the Opéra Nationale de Paris from 1945 to 1950; a radio broadcaster; and a close friend of Claude Debussy. As a composer, Inghelbrecht was largely self-taught and his oeuvre of around 60 works includes operettas and opera-ballets; orchestral works; and compositions for solo piano and piano four-hands.


Tuesday, 16 September 2025

Listeners, thank you for keeping The Classical Station on the air with great classical music since 1978, 24 hours a day, and always with a live announcer.

Please help sustain this wonderful music and keep it accessible to people all over the planet.

Donate here or text CLASSICAL to 707070 and we’ll send you a secure link!

 

On this date in classical music history:

It’s the birthdate of German Benedictine abbess, composer, and patron saint of musicians and writers Hildegard von Bingen, born in Böckelheim, West Franconia (Germany) in 1098. Bingen received her early education at the Benedictine cloister of Disibodenberg and was 15 when she took the vows to remain in the priory (and was named prioress in 1136). In her 40s, Bingen began to speak of the visions she had experienced since childhood; after these visions were authenticated, as it were, by a theological committee, a monk was assigned to help her write them down. The result was Scivias, a written record of 26 of her prophetic visions. In the late 1140s, Bingen founded a new convent at Rupertsberg, where she continued to record her visions and compose poetry and music (including the Symphonia armonie celestium revelationum (Symphony of the Harmony of Heavenly Revelations)). She also wrote on medicine, natural history, and other scientific observations, and apparently invented her own language. Bingen was also a traveling evangelist who was considered a saint and a miracle-worker during her lifetime. She was formally canonized in 2012 by Pope Benedict XVI and was also one of only four women ever proclaimed as a Doctor of the Church (a group of saints whose writings are considered doctrinal).


Monday, 15 September 2025

Welcome to the new week, All. We’ve got things underway with wonderful music.

Join us at 8pm ET for Monday Night at the Symphony features recordings of the Columbia Symphony Orchestra performing works by Ludwig van Beethoven, Vincent D’Indy, and other great composers under the direction of Bruno Walter, Thomas Schippers, and Aaron Copland.

 

On Tuesday, tune into Classical Café with George Leef for this week’s Legendary Performer:
Polish violinist and composer Henryk Wieniawski.

 

 

And on Wednesday (between 11am and noon ET), George will give away tickets to see Oak City Brass: Old, New, Borrowed, Blue (part of the Halle Cultural Arts Center’s Classical Concert Series).

Tune in to win!

 

On this date in classical music history:

Rafael Frühbeck de Burgos conducting the New York Philharmonic, c. 2012. (Photo by Getty Images – Courtesy of Wikimedia Commons)

It’s the birthdate of Spanish conductor and composer Rafael Frühbeck de Burgos in 1933 in Burgos. He was an early student of the violin via his mother and he was concertmaster of the town’s orchestra by the age of 14. He continued conservatory studies in violin, piano, and composition in both Bilbao and Madrid and was serving in the Spanish Army when he began conducting. Frühbeck later graduated from Munich’s Hochschule für Musik; received the Richard Strauss Prize; and began his long career as a principal conductor of various orchestras with the Bilbao Symphony Orchestra (1958-1962). Burgos went on to conduct and record with many orchestras, including the Spanish National Orchestra, the Düsseldorf Symphony Orchestra, Rundfunkorchester Berlin, the Deutsche Oper Berlin, the Montreal Symphony Orchestra, the Vienna Symphony, and others. He received the 2011 Conductor of the Year award from Musical America and retired in 2014 when he was conductor of the Danish National Symphony Orchestra.

Now Playing

Piano Trio No. 43 in C

Composed by

Josef Haydn (1732-1809)

Performed by

Kalichstein-Laredo-Robinson Trio

Label

Dorian

Catalog Number

90164

Today's Playlist

2:00am Panis angelicus

Composed by

Cesar Franck (1822-1890)

Performed by

Lloyd Webber/Royal Philharmonic/Judd

2:05am Symphony No. 9 in E minor, Op. 95 "From the New World"

Composed by

Antonin Dvorak (1841-1904)

Performed by

Vienna Philharmonic/Kubelik

2:47am Comptine d'un autre ete, l'apres midi

Composed by

Yann Tiersen

Performed by

Jeroen van Veen, piano

2:50am Adagio in G minor

Composed by

Tomaso Albinoni (arr. Remo Giazotto)

Performed by

English Chamber Orchestra/Watson

3:00am Flute Quintet in D, Op. 51 No. 1

Composed by

Friedrich Kuhlau (1786-1832)

Performed by

Rampal/Juilliard String Quartet

3:26am Pan Voyevoda

Composed by

Nikolai Rimsky-Korsakov (1844-1908)

Performed by

Slovak Philharmonic/Rezucha

3:54am Life

Composed by

Ludovico Einaudi (b.1955)

Performed by

Dubeau/La Pieta

4:00am Meditation from Thais

Composed by

Jules Massenet (1842-1912)

Performed by

Ma/Stott

4:07am String Quartet No. 17 in B flat, K. 458 "Hunt"

Composed by

Wolfgang Amadeus Mozart (1756-1791)

Performed by

Emerson String Quartet

4:33am Piano Sonata No. 26 in E flat, Op. 81a "Les Adieux"

Composed by

Ludwig van Beethoven (1770-1827)

Performed by

Vladimir Ashkenazy

4:52am Pavane for a Dead Princess

Composed by

Maurice Ravel (1875-1937)

Performed by

Scottish Chamber Orchestra/Saraste

4:59am Nimrod from Enigma Variations, Op. 36

Composed by

Edward Elgar (1857-1934)

Performed by

Kanneh-Mason/Davies/Roberts/Knight/Dearnley/Klouda

5:04am Piano Quartet No. 1 in C minor, Op. 15

Composed by

Gabriel Faure (1845-1924)

Performed by

Kissin/Emerson String Quartet members

5:36am Letter from Home

Composed by

Aaron Copland (1900-1990)

Performed by

Saint Louis Symphony/Slatkin

5:44am Two Arabesques

Composed by

Claude Debussy (1862-1918)

Performed by

Nancy Allen

5:53am Music selected by the announcer

6:01am Song for World Peace

Composed by

John Williams (b.1932)

Performed by

Recording Arts Orchestra/Williams

6:07am Lullaby for Strings

Composed by

George Gershwin (1898-1937)

Performed by

Dallas Symphony/Litton

6:17am The Dawning of the Day from 'The Guys'

Composed by

Traditional, lyrics Mary Fahl

Performed by

Fahl/Danna/McCollum/Worthington

6:23am American Caprice

Composed by

Morton Gould (1913-1996)

Performed by

Lara Downes

6:29am In Memoriam

Composed by

William Grant Still (1895-1978)

Performed by

Fort Smith Symphony/Jeter

6:37am Elegy for English Horn, Harp & String Orchestra

Composed by

Peter Boyer (b.1970)

Performed by

London Symphony Orchestra/Boyer

6:42am Romance for Cello and Piano

Composed by

Frederick Delius (1862-1934)

Performed by

Ma/Stott

6:49am Harp Concerto in D

Composed by

Johann Christian Bach (1735-1782)

Performed by

Chalan/Antiqua Musica Orchestra/Couraud

7:01am Lyric for Strings

Composed by

George Walker (1922-2018)

Performed by

Royal Scottish National Orchestra/Gray

7:08am The Stars and Stripes Forever

Composed by

John Philip Sousa (1854-1932)

Performed by

Vladimir Horowitz

7:13am American Eagle Waltz

Composed by

Jacques Offenbach (1819-1880)

Performed by

Gulbenkian Orchestra/Swierczewski

7:21am The Moldau from Ma Vlast (My Fatherland)

Composed by

Bedrich Smetana (1824-1884)

Performed by

Minnesota Orchestra/Oue

7:35am A Hymn for the Lost and Living

Composed by

Eric Ewazen (b.1954)

Performed by

Rutgers Wind Ensemble/Berz

7:45am The Union, (a concert paraphrase on national airs)

Composed by

Louis Moreau Gottschalk (1829–1869)

Performed by

Alan Marks

7:55am Elegy from "World Trade Center"

Composed by

Craig Armstrong (b.1959)

Performed by

Hollywood Studio Symphony/Hollywood Film Chorale/Anthony

8:01am Festival Overture on the Star-Spangled Banner

Composed by

Dudley Buck

Performed by

Saint Louis Symphony & Chorus/Slatkin

8:09am Amber Waves

Composed by

Morton Gould (1913-1996)

Performed by

National Symphony Orchestra of Ukraine/Kuchar

8:17am America the Beautiful

Composed by

Samuel A. Ward (1848-1903)

Performed by

Graves/Perry/String Quartet

8:24am Symphony No. 101 in D, "Clock"

Composed by

Josef Haydn (1732-1809)

Performed by

Scottish Chamber Orchestra/Leppard

8:54am Music selected by the announcer

9:01am Adagio for Strings, Op. 11

Composed by

Samuel Barber (1910-1981)

Performed by

Philadelphia Orchestra/Ormandy

9:10am Ave Maria

Composed by

Giulio Caccini, arr. by David Cullen

Performed by

Lloyd Webber/Royal Philharmonic/Judd

9:17am As All the Heavens Were a Bell

Composed by

Jay Bocook (b.1953)

Performed by

Midwest Wind Ensemble

9:23am Piano Concerto No. 23 in A, K. 488

Composed by

Wolfgang Amadeus Mozart (1756-1791)

Performed by

Pommier/Sinfonia Varsovia

9:52am Rainbow Connection

Composed by

Paul Williams

Performed by

Lang Lang

9:57am God shall wipe away all tears

Composed by

Karl Jenkins (1944-)

Performed by

Polyphony/Layton

10:01am Eternal Father, Strong to Save (The Navy Hymn)

Composed by

John B. Dykes, arr. Thomas Beveridge

Performed by

Washington Men's Camerata

10:06am Symphony No. 1 in B flat

Composed by

William Boyce (1711-1779)

Performed by

English String Orchestra/Boughton

10:15am Prelude, Fugue and Variation, Op. 18, FWV 30

Composed by

Cesar Franck (1822-1890)

Performed by

Paul Crossley

10:29am Piano Concerto No. 2 in F minor, Op. 21

Composed by

Frederic Chopin (1810-1849)

Performed by

Freire/Gurzenich Orchestra of Cologne/Bringuier

11:00am Abide with me

Composed by

William Henry Monk (1823-1889)

Performed by

Gowers/Choir of King's College Cambridge/Cleobury

11:06am Fanfare for the Common Man

Composed by

Aaron Copland (1900-1990)

Performed by

Cincinnati Pops/Kunzel

11:10am Piano Sonata No. 14 in C sharp minor, Op. 27 No. 2 “Moonlight”

Composed by

Ludwig van Beethoven (1770-1827)

Performed by

André Watts

11:28am Distant Land (A Prayer for Freedom)

Composed by

John Rutter (1945-)

Performed by

Black Dyke Band/Childs

11:34am A Mighty Fortress Is Our God

Composed by

Joseph Joachim Raff (1822-1882)

Performed by

Basel Radio Symphony/Travis

11:54am Un bel di vedremo from Madama Butterfly

Composed by

Giacomo Puccini (1858-1924)

Performed by

Fleming/London Philharmonic/Mackerras

12:01pm Gabriel's Oboe from The Mission

Composed by

Ennio Morricone (1928-2020)

Performed by

Sundet/Panoramicos

12:05pm Dome epais le jasmin (Flower Duet) from Lakme

Composed by

Leo Delibes (1836-1891)

Performed by

Sutherland/Berbie/Monte Carlo Opera/Bonynge

12:11pm The Dawning of the Day from 'The Guys'

Composed by

Traditional

Performed by

FDNY Emerald Society Pipes and Drums

12:15pm The Lark Ascending

Composed by

Ralph Vaughan Williams (1872-1958)

Performed by

Kennedy/City of Birmingham Symphony/Rattle

12:34pm Sonata No. 1 in F, ZWV 181

Composed by

Jan Dismas Zelenka (1679-1745)

Performed by

Glaetzner/Goritzki/Sönstevold/Bernstein/Beyer/Pank

12:52pm Divenire for violin, cello, strings and two harps

Composed by

Ludovico Einaudi, arr. by Paul Bateman

Performed by

Samuelsen/Samuelsen/RLPO/Petrenko

1:00pm Symphony No. 9 in D minor, Op. 125 "Choral"

Composed by

Ludwig van Beethoven (1770-1827)

Performed by

Chicago Symphony/Solti

2:17pm Finlandia, Op. 26

Composed by

Jean Sibelius (1865-1957)

Performed by

Berlin Philharmonic/Karajan

2:28pm Te Deum, H.146

Composed by

Marc-Antoine Charpentier (1643–1704)

Performed by

Lott, et. al./King's College Choir/Academy SMF/Ledger

2:54pm Cherubim Hymn

Composed by

Tchaikovsky

Performed by

St. John's Russian Orthodox Choir/Havriliak

3:01pm Come Away (Come Again)

Composed by

John Dowland (c.1563-1626)

Performed by

Nigel North

3:04pm Piano Concerto No. 4 in G, Op. 58

Composed by

Ludwig van Beethoven (1770-1827)

Performed by

Hough/Finnish Radio Symphony/Lintu

3:41pm 2nd mvt (Lento e largo - tranquillissimo) from Symphony No. 3, Op. 36

Composed by

Henryk Gorecki (1933-2010)

Performed by

Upshaw/London Sinfonietta/Zinman

3:51pm Nuvole bianche

Composed by

Ludovico Einaudi (b.1955)

Performed by

Ludovico Einaudi

3:58pm Morning Mood from Peer Gynt Suite No. 1, Op. 46

Composed by

Edvard Grieg (1843–1907)

Performed by

English Chamber Orchestra/Leppard

4:04pm Funeral and Finale from The Vikings

Composed by

Mario Nascimbene

Performed by

Crouch Festival Chorus/Prague Philharmonic/Temple

4:08pm A mighty fortress is our God

Composed by

Martin Luther (1483-1546)

Performed by

Williamson/King's College Choir/Wallace Collection/Cleobury

4:14pm Distant Land

Composed by

John Rutter (1945-)

Performed by

Royal Philharmonic/Rutter

4:22pm Agnus Dei

Composed by

Samuel Barber (1910-1981)

Performed by

The Sixteen/Christophers

4:31pm Ave Maria

Composed by

Giulio Caccini, arr. by David Cullen

Performed by

Lloyd Webber/Royal Philharmonic/Judd

4:37pm Miserere mei, Deus

Composed by

Gregorio Allegri (1582-1652)

Performed by

Tallis Scholars/Phillips

4:50pm Let My Love Be Heard

Composed by

Jake Runestad (1986-)

Performed by

Wartburg College Choir/Nelson

4:56pm Amazing Grace

Composed by

John Newton, arr. by Mack Wilberg

Performed by

Utah State University Chamber Singers/Evans

5:02pm Nimrod from Enigma Variations, Op. 36

Composed by

Edward Elgar (1857-1934)

Performed by

Kansas City Symphony/Stern

5:08pm Lost Horizon

Composed by

Dimitri Tiomkin (1894-1979)

Performed by

National Philharmonic/Gerhardt

5:32pm Appalachia Waltz

Composed by

Mark O'Connor (b.1961)

Performed by

O'Connor/Salerno-Sonnenberg

5:39pm Battle Hymn of the Republic

Composed by

Traditional, arr. by Peter Wilhousky

Performed by

U.S. Army Chorus

5:45pm Pavane for a Dead Princess

Composed by

Maurice Ravel (1875-1937)

Performed by

Saint Paul Chamber Orchestra/Wolff

5:53pm Adagio for Strings, Op. 11

Composed by

Samuel Barber (1910-1981)

Performed by

Manhattan String Quartet

6:02pm God of our Fathers, arr. Mary McDonald

Composed by

Warren, G.W., arr. Mary McDonald

Performed by

Hal Leonard Church Choral

6:07pm Adagio in G minor

Composed by

Tomaso Albinoni (arr. Remo Giazotto)

Performed by

King's Chamber Orchestra/Malgoire

6:17pm Etudes, Op. 10

Composed by

Frederic Chopin (1810-1849)

Performed by

Yunchan Lim

6:45pm Hymn to the Fallen from Saving Private Ryan

Composed by

John Williams (b.1932)

Performed by

Voces8

6:52pm The Armed Man: A Mass for Peace

Composed by

Karl Jenkins (1944-)

Performed by

London Philharmonic/Nat. Youth Choir of Great Britain/Jenkins

8:01pm Symphony No. 3 in C minor, Op. 78 "Organ"

Composed by

Camille Saint-Saens (1835-1921)

Performed by

Latry/Philadelphia Orchestra/Eschenbach

8:40pm Adagietto from Symphony No. 5 in C sharp minor

Composed by

Gustav Mahler (1860-1911)

Performed by

Junge Deutsche Philharmonie/Barshai

8:49pm Silver Fanfare

Composed by

Peter Boyer (b.1970)

Performed by

London Philharmonic/Boyer

8:55pm Rosh Hashanah

Composed by

The Birthday of the World: Music and Traditions of the High Holy Days

Performed by

Nimoy/Western Wind Vocal Ensemble

9:59pm There will be Rest

Composed by

Frank Ticheli (b.1958)

Performed by

Vox Humana/Childs

10:07pm Cello Suite No. 2 in D minor, BWV 1008

Composed by

Johann Sebastian Bach (1685-1750)

Performed by

Alon Sariel

10:29pm Song for World Peace

Composed by

John Williams (b.1932)

Performed by

Recording Arts Orchestra/Williams

10:35pm Meditation from Thais

Composed by

Jules Massenet (1842-1912)

Performed by

Ma/Stott

10:42pm Rest

Composed by

Frank Ticheli (b.1958)

Performed by

Dallas Wind Symphony/Junkin

10:51pm Adoration for violin and piano

Composed by

Florence Price (1887-1953)

Performed by

Goosby/Wang

10:56pm Harp Quintet in C minor

Composed by

E.T.A. Hoffmann (1776-1822)

Performed by

Nordman/Jarry/Ghestem/Collot/Tournus

11:16pm Sleep

Composed by

Eric Whitacre (b. 1970), Orch. Jim Clements

Performed by

Voces8 Foundation Choir/Voces8 Foundation Orchestra/Smith

11:23pm The Moldau from Ma Vlast (My Fatherland)

Composed by

Bedrich Smetana (1824-1884)

Performed by

Slovak Philharmonic/Wordsworth

11:37pm The Stars and Stripes Forever

Composed by

John Philip Sousa (1854-1932)

Performed by

Vladimir Horowitz

11:42pm Music selected by the announcer