1. obligato - Noun
2. obligato - Adjective
See Obbligato.
Source: Webster's dictionaryBrown, "B A: Gluck, Christoph Willibald, Ritter von", Grove Music Online ed. L. Macy (Retrieved 10 December 2007) Some chamber music in this period includes trombone in an obligato role with voice, and also as a concerto instrument with string orchestra. Source: Internet
In 1631 he published a number of masses, which were much more baroque, with basso continuo, rhetorical word painting and obligato usage of instruments. Source: Internet