Benny Goodman even to use new fingering techniques. He had his old finger calluses removed and started to learn how to play his clarinet again—almost from scratch." Goodman commissioned compositions for clarinet and chamber ensembles or orchestra that have become standard pieces of classical repertoire. He premiered works by composers, such as "Contrasts" by Béla Bartók; "Clarinet Concerto No. 2, Op. 115" by Malcolm Arnold; "Derivations for Clarinet and Band" by Morton Gould; "Sonata for Clarinet and Piano" by Francis Poulenc, and "Clarinet Concerto" by Aaron Copland. "Prelude, Fugue, and Riffs" by Leonard Bernstein was commissioned for Woody Herman's big band, but
Benny Goodman Donald Clarke, this was not a happy time for Goodman. He reunited the band to tour with Louis Armstrong. But he insulted Armstrong and "was appalled at the vaudeville aspects of Louis's act...a contradiction of everything Goodman stood for". Armstrong left Goodman hanging during a joint performance where Goodman called Armstrong back onstage to wrap up the show. Armstrong refused to perform alongside Goodman, which led essentially to the end of their friendship, cordial or otherwise. Goodman's band appeared as a specialty act in the films "The Big Broadcast of 1937"; "Hollywood Hotel" (1938); "Syncopation" (1942); "The Powers Girl" (1942);