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 discography ten songs with the Clark Randall orchestra in March 1935. "Icky Morgan" was released as a Brunswick 10 inch 78 single in 1935 as Brunswick 7415 backed with "Troublesome Trumpet". The song appears on the 2001 compilation album "Bob Crosby and His Orchestra: And Then Some, Parts 1 and 2 of the Complete Discography" on Halcyon, HALC 142, and the 2005 compilation series "The Glenn Miller Story, Vol. 1-2" on Avid Entertainment. "Doin' the Jive" was composed by Glenn Miller and Chummy MacGregor in 1937 and recorded for Brunswick on November 29, 1937, and released as Brunswick 8063 with "Humoresque"