Throughout his time as a scientist and businessman, Kohn pursued a parallel passion for music. He had begun his musical studies in Amsterdam with the violin, trained by a member of the
Concertgebouw Orchestra. In Rome he switched to singing, training as a bel canto baritone under Manlio Marcantoni, who introduced him to the great operatic tenor
Beniamino Gigli. In New York, Kohn continued his training under Charles Wadsworth, then in London under Helen Isepp,
Otakar Kraus and
Derek Hammond-Stroud. "I didn't know if I was good enough to get to the top of the tree in music," Kohn once said. "I thought that medicine looked like a safer bet." Although he never went professional, Kohn made a public debut at the
Wigmore Hall in his late thirties. Subsequently he gave performances in other major concert venues. He recorded 18 CDs, mostly of
lieder, including song cycles by Schubert, Schumann, Beethoven and Mahler, as well as Italian Baroque love songs, and arias from cantatas by Kohn's beloved
J.S. Bach, accompanied by leading British pianists such as
Graham Johnson and
Roger Vignoles. He also made orchestral recordings with the
English Chamber Orchestra. Kohn took an active role in musical administration, initiating the Wigmore Hall International Song Competition and serving on the board of curators of the
Bach-Archiv in Leipzig. ==Awards and honours==