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 with the Army Air Forces Training Command Band in several different versions and was recorded for release as a V-Disc. A V-Disc test pressing was made from the November 10, 1945 recording of "7-0-5". The title "7-0-5" refers to the number of the score in the Glenn Miller music library. Each score had a number in the system that Miller and his arrangers devised. It was published as "Rock and Ride". The other titles that were used for the composition included "Goofin' Off" and "Jivin' the Blues". No title was decided upon so the score number was retained. "7-0-5" was