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Mozart 40

Music Director David Hayes opens the 2026–27 season with Mozart’s Symphony No. 40 in G minor, a work of uncommon intensity and one of the defining symphonies of the Classical era. Its expressive depth reveals Mozart in a darker and more searching voice. The program continues with J.C. Bach’s Symphony in G minor, Op. 6 No. 6, whose poise and vitality reflect the style that so influenced the young Mozart. Closing the program is Schubert’s Symphony No. 5 in B-flat major, a tribute to the Classical tradition and especially to Mozart. Light in texture and rich in melody, it shows the young Schubert writing with clarity, elegance, and unmistakable lyricism.

Season 26/27

Discover a season of deep listening that centers classical
and baroque masterpieces with the intimacy and
precision that only a chamber orchestra can bring.

This year, we begin multi-season projects that explore
the 200th anniversaries of the deaths of Beethoven and
Schubert, essential favorites of Mozart and Haydn, and
a complete traversal of Bach’s Brandenburgs featuring our
own virtuosic soloists.

We also present a new lecture series where you can find
a more rich and personal connection to these incredible
works with music director David Hayes and guest
experts at the Ethical Society on Rittenhouse Square

More Upcoming Performances

Ancient Airs

Friday, November 6, 2026 7:30pm
Sunday, November 8, 2026 4:00pm
Renowned for its luminous string sound, the Chamber Orchestra of Philadelphia shines in a program celebrating the lush versatility of the string orchestra. Respighi’s Ancient Airs and Dances, Suite No. III, David Diamond’s lyrical Rounds for String Orchestra, and Leonard Bernstein’s masterful orchestral arrangement of Beethoven’s String Quartet No. 16, Op. 135 come together in an evening of warmth, refinement, and extraordinary artistry.

Holiday Brandenburg

Saturday, December 19, 2026 4:00pm
Sunday, December 20, 2026 4:00pm

Concertmaster, Min-Young Kim will lead Bach’s Brandenburg Concertos
Nos. 1, 3, and 4 showcase the brilliance, variety, and invention of one of
music’s most enduring masterpieces. Each concerto offers its own
distinctive character, from the festive energy of No. 1 to the pure string
vitality of No. 3 and the sparkling interplay of No. 4. Complementing Bach’s
music is Christopher Theofanidis’s Muse, a contemporary response inspired
by Brandenburg Concerto No. 3. Together, these works place Baroque form
and modern imagination in dialogue across three centuries.

Mozart Gran Partita

Saturday, January 16, 2027 4:00pm
Sunday, January 17, 2027 4:00pm

Mozart’s Serenade No. 10 in B-flat major, K. 361, “Gran Partita” is one of the
great masterpieces of the Classical era. Grand in scale yet intimate in
expression, the work unfolds across seven movements with elegance,
warmth, and depth. Mozart brings a remarkable range of color and
character to the score, moving from nobility and lyricism to humor and
brilliance. The result is music of refinement, beauty, and unmistakable
humanity.

Haydn Morning, Noon, and Night

Saturday, March 20, 2027 4:00pm
Sunday, March 21, 2027 4:00pm

Haydn’s Symphonies Nos. 6, 7, and 8—Le matin (“Morning”), Le midi
(“Noon”), and Le soir (“Evening”)—stand as quintessential examples of the
Classical style. Written in succession early in his career at the Esterházy
court, they form a cohesive triptych when performed together. Under the
baton of Music Director David Hayes, these masterworks unfold with
clarity, balance, and grace

Beethoven Violin Concerto

Friday, April 30, 2027 7:30pm
Sunday, May 2, 2027 4:00pm

Composed in 1806, Beethoven’s Violin Concerto reflects the best of his
middle-period style. His only concerto for violin, it is widely regarded as
one of his finest achievements and remains one of the most beloved works
in the repertoire. Symphony No. 2 stands at the threshold between his early
Classical style and the broader musical language of his middle period.
Together, these works trace Beethoven’s path from inherited eighteenth-century models toward a new musical voice.

Lecture Series

Discover a richer, more personal connection to the music of this season through a series of engaging conversations with Music Director David Hayes and distinguished guest experts. Together, they will explore the life, mind, health, and music of Beethoven, offering new perspectives on the men behind the masterpieces.
These conversations will take place at the Philadelphia Ethical Society, 1906 Rittenhouse Square, Philadelphia, PA 19103.
$25/pp

Brandenburg and Bach with David Hayes
Sunday, December 6, 2026 2:30PM

Inside the Mind of Beethoven: The Heiligenstadt Letter
Sunday, February 21, 2027 2:30PM

An Autopsy of Beethoven with Martin Heyworth, M.D.
Sunday, April 18, 2027 2:30PM

Brandenburg and Bach
Sunday, December 6, 2026 2:30PM
The Heiligenstadt Letter: Beethoven and Mental Health
Sunday, February 21, 2027 2:30PM
An Autopsy of Beethoven
Sunday, April 18, 2027 2:30PM
Music Director David Hayes explores the brilliance and complexity of Bach’s Brandenburg Concertos—six remarkably inventive works that showcase a different and often daring combination of instruments. Written during a period when Bach was deeply engaged with secular instrumental music, the Brandenburg Concertos reveal the composer at his most imaginative and adventurous. David will illuminate what makes these works so distinctive and why, more than 300 years later, they remain among the great achievements of the Baroque era.
Kenneth J. Weiss, M.D., is a psychiatrist and Clinical Professor of Psychiatry with expertise in forensic psychiatric assessment and consultation. Drawing on his understanding of human behavior and the complexities of the mind, Dr. Weiss will join Music Director David Hayes to explore the mind of Beethoven, tracing his psychological and creative evolution from his middle period through his final years.

Martin Heyworth, M.D., is a physician, medical researcher, and musician. A graduate of Cambridge University, he spent his career in academic medicine before retiring in 2017 to pursue his longstanding interest in music and composition. Drawing on his expertise in both medicine and music, Dr. Heyworth will explore Beethoven’s declining health and eventual death in light of new medical evidence. 

Our Mission

To be a sustainable musical institution that brings the intimate experience of a world-class chamber orchestra performance to the greater Philadelphia area, enriching the musical life of the City and region by the integrity and excellence of its musicianship, the boldness and vitality of its programming, and by cultivating and building the loyalty of its audiences, musicians and supporters.
Founded in 1964.
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About
Music Director, David Hayes

The Chamber Orchestra of Philadelphia (COP) is renowned for its artistic excellence, remarkable versatility across musical styles, and adventurous programming. Founded in 1964, COP comprises 33 musicians—approximately the size of orchestra for which Mozart, Haydn, and early Beethoven wrote—allowing for stylistic authenticity, clarity of texture, and an intimate concert experience that audiences increasingly value. COP is led by Music Director David Hayes, appointed in 2024 as the Orchestra’s fourth music director.

COP is deeply committed to sharing exceptional live music with broad and diverse communities throughout Greater Philadelphia. The Orchestra presents more than 30 subscription, neighborhood, and educational programs each season and extends its reach through livestream broadcasts of select performances. COP also hosts the biennial Lloyd Piano Competition, which most recently brought six finalists from across the country to Philadelphia in June 2026. Competition winner Elliot Wuu joins COP next season as soloist in Grieg’s Piano Concerto.

This season, the Chamber Orchestra partners with unique spaces and concert venues across the region to create memorable experiences for its audiences. COP performs in museums, churches, cloisters, and theaters—inviting audiences to experience great music in settings that complement and enhance each program.

The season also features three special lectures at the Philadelphia Ethical Society, offering audiences a deeper connection to the music, composers, and ideas behind the Orchestra’s performances.

The season culminates with Orchestra in the Garden, bringing the Chamber Orchestra into beautiful natural landscapes across the region and creating a distinctive meeting of music, architecture, and nature.