Intermediate trios in bass clef. Each Volume of these Trios is published in two books, one in TREBLE (G) Clef and one in BASS CLEF. While each Volume can be played by any mix of instruments built in the same key, the two volumes are compatible when instruments using the TREBLE CLEF book are Bb instruments, such as trumpets, cornets, or baritone, treble clef. Intermediate volume includes: PRAETORIUS Chorale from Musae Sioniae; CHERUBINI Do-Do-Sol-La-Fa-Sol; BEETHOVEN The Heavens; Song of the Night;HANDEL March; NANINI Motet; SPEER Sonata 1; ROSSI Trio Sonata.