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 Sims military, Benny played with The Morris Brothers, Wiley and Zeke, through which he met Earl Scruggs, a previous band mate of the brothers. Scruggs had recently formed a band with Lester Flatt, and when they found themselves in need of a fiddler in 1949, they invited Sims to join the group. After joining Flatt and Scruggs, Sims played on over 25 recordings in 1949 and 1950, including "Little Girl in Tennessee", "It's Too Late Now", "Salty Dog Blues", "Foggy Mountain Breakdown", "Pike County Breakdown" and "Roll in My Sweet Baby's Arms." Sims sung lead vocals on "Old Salty Dog Blues,"