A few days later, Jack arrived at Mrs. Johnson's studio, trombone case in hand, eager to start his first lesson. Mrs. Johnson greeted him warmly and asked him to take a seat on the couch with his instrument. She then handed him a copy of the "Trombone Standard of Excellence Book 1" and explained that this book would be his primary resource for learning the basics of trombone playing.
Several legal sheet music retailers sell the digital version: trombone standard of excellence book 1 pdf