Band Time Expert ( C Trombone 2 BC )
Jan de Haan
Jugendorchester
Band Time Expert ( Eb Alto Saxophone 1 )
Jacob de Haan
Jugendorchester
Band Time Expert ( Eb Alto Saxophone 2 )
Jacob de Haan
Jugendorchester
Band Time Starter ( Bb Soprano Saxophone )
Jan de Haan
Orchesterschule
Band Time Starter ( Eb Baritone Saxophone )
Jan de Haan
Blasorchester / Concert Band