Weinberger Musikverlag Die Trompeterfibel 1, Course Book for Trumpet, Volume 1 of the trumpet school for children from 7 years, By Gerhard Sowa, ISBN 9783940297372, ISMN 9790500497370, Publisher's No. WEINB 2737-31, Format: 20.5 x 30 cm, In German, CD with play-alongs