Caspar René Hirschfeld (born 21 May 1965) is a German composer and violinist.
Born in Wernigerode, Hirschfeld received his first violin lessons at the music school from the age of 5. At the age of 9 he began composing. From 1982 to 1987 he studied composition with Udo Zimmermann and Wilfried Krätzschmar and violin with Christian Redder at the Hochschule für Musik Carl Maria von Weber Dresden. Until 1989 he was master student of Udo Zimmermann. Other important mentors were Paul-Heinz Dittrich, Gret Palucca, the dancer and the painter Günter Firit.
From 1987 to 1994 Hirschfeld taught at the Dresden Academy of Music and the Hochschule für Musik "Hanns Eisler" in Berlin. He also worked at the ACMP Foundation in New York and at the Rheinsberg Music Academy. Besides being a composer, he appeared in the 90s as a dancer and performance artist as well as a pianist and .
Hirschfeld's compositional oeuvre includes incidental music, ballets, symphonies, choral music, chamber music, solo works and songs as well as tango and jazz cycles. In 1991 his chamber opera Bianca was premiered at the Salzburg Festival. In 2005 his work Wandlungen V - Doppelkonzert für Violine, Violoncello und Orchester was premiered at the Magdeburg Cathedral for the award of the to former Federal President of Germany Richard von Weizsäcker.
His musical language can be attributed to New Music, but cannot be assigned to a particular school, since his personal style combines a wide variety of influences. In many works, strongly motoric elements and culminating drama are contrasted with a distinct internalization and singing and gestural-dancing.
Hirschfeld also performs as a violinist, primarily with Baroque music (among others with the Albert/Hirschfeld Duo with the guitarist Sebastian Albert) and contemporary music