Two or three instruments Brass Therapy for horn, trombone, and tuba by Amparo Edo Biol Maggie’s Song for clarinet, horn, and piano by Amparo Edo Biol Morning Dialogue for flute and horn by Amparo Edo Biol Olág for clarinet, violin, and piano by Amparo Edo Biol Vocalise for clarinet, horn, and piano by Amparo Edo Biol