 During Cohen's time with the trio, dozens of recordings were released, including the complete piano trios of Ludwig van Beethoven, Haydn, Mozart, Dvořák, Brahms, as well as works by Chopin, Pyotr Tchaikovsky, Sergei Rachmaninoff, Charles Ives, and Dmitri Shostakovich.After twenty-three years with the group, he was succeeded as violinist by Ida Kavafian.As a teacher, Cohen was on faculty at numerous institutions and festivals in addition to Juilliard, including the Aspen Music Festival the Curtis Institute of Music, Princeton University, SUNY at Stony Brook, and the Manhattan School of Music.