4 Bb Trumpets, or 3 Bb Trumpets and one Bb Bass Trumpet (or Baritone or Trombone.) A bass clef part is included for the 4th part in case a Bass Trumpet is not available. This late Renaissance work is written in a stirring imitative style. Particularly interesting are the meter changes involving metric modulations, a trait found in much of the dance music of the day. It makes an outstanding feature number for a recital as well as a wonderful musical offering in church.