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 to the creation of be-bop, which was the predominant style of jazz in the late forties, see "Glenn Miller: The Godfather of Bop?" by Richard Jessen. Mr. Jessen says that Miller's recording of "Wham" from August 1, 1939, predates the same phrasing used in "Salt Peanuts" by Charlie Parker and Dizzy Gillespie in 1944. Jessen points out though that "Wham" was arranged by Eddie Durham. Songs that were in the civilian band and Army Air Force band libraries include: A disc released in 2010 is called "The Final - His Last Recordings" and collects Miller's last known recorded performances (November,