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 sometime early in the morning. Next day, we cut the record. It's been the most popular I've ever done! The lyrics were later included with the sheet music, but it never carried our names." The first authenticated recordings made by Glenn Miller were in 1926. In the fall of 1926, Earl Baker, a cornetist, made recordings on cylinders using the Edison Standard Phonograph recording device, making the first recordings of Glenn Miller, Benny Goodman, and Fud Livingston. Miller and Goodman were both in the Ben Pollack and his Californians band at that time. The Ben Pollack band was in Chicago,