Assertion: trombone | /r/UsedFor | two violins
Facets:
Source sentences:
text: In addition to the Magnificat, two movements specify trombones: the opening "Deus in adiutorium" is for six voices, two violins, two cornetts, three trombones, five viole da braccio and basso continuo; Sonata sopra "Sancta Maria, ora pro nobis" is for soprano, two violins, two cornetts, three trombones (one of which can be a viola da braccio) and basso continuo.