These trios may be performed by any three treble instruments in the same key. When using mixed brasses, B Flat trumpets or TC baritones play the treble clef book; trombones, BC baritones and tuba play the bass clef book. Contents: Bruckner-Aequale; Praetorius-Babylon; Mozart-Divertimento No. 5; Haydn-Fugue; Speer-Sonata No. 2.