8/16/2019 Crespo Improvisation No.1 for Trombone 1/4 8/16/2019 Crespo Improvisation No.1 for Trombone 2/4 8/16/2019 Crespo Improvisation No.1 for Trombone 3/4 8/16/2019 Crespo Improvisation No.1 for Trombone 4/4