Glenn Miller be mentored by other professional musicians. In the beginning, he was the main trombone soloist of the band. But when Jack Teagarden joined Pollack's band in 1928, Miller found that his solos were cut drastically. He realized that his future was in arranging and composing. He had a songbook published in Chicago in 1928 entitled "Glenn Miller's 125 Jazz Breaks for Trombone" by the Melrose Brothers. During his time with Pollack, he wrote several arrangements. He wrote his first composition, "Room 1411", with Benny Goodman, and it was released as a 78 by Brunswick Records under the name Benny Goodman's
Glenn Miller to accept him so he could, in his own words, "be placed in charge of a modernized Army band". After he was accepted into the Army, Miller's civilian band played its last concert in Passaic, New Jersey, on September 27, 1942, with the last song played by the Miller civilian band being "Jukebox Saturday Night"—featuring an appearance by Harry James on trumpet. His patriotic intention of entertaining the Allied Forces with the fusion of virtuosity and dance rhythms in his music earned him the rank of captain and he was soon promoted to major by August 1944. Miller reported at