Vocal score or Piano-vocal score is a music score of an opera, or a vocal or choral composition with orchestra (like oratorio or cantata) where the vocal parts are written out in full but the accompaniment is reduced to two staves and adapted for playing on piano. It could be related to a musical work before it was orchestrated or to the arrangement or transcription of a piece for practical reasons (for example, for rehearsing of the singers or chorus as part of the preparation of the piece for a performance). Sydney Opera House: one of the worlds most recognisable opera houses and landmarks. ... In music a singer or vocalist is a type of musician who sings, i. ... This article is about choirs, musical ensembles containing singers. ... An oratorio is a large musical composition for orchestra, vocal soloists and chorus. ... Cantata (Italian for a song or story set to music), a vocal composition accompanied by instruments and generally containing more than one movement. ... In music accompaniment is the art of playing along with a soloist or ensemble, often known as the lead, in a supporting manner as well as the music thus played. ...