A report on Choir, Orchestra and Sheet music

Choirs may sing without instrumental accompaniment, with the accompaniment of a piano or pipe organ, a small ensemble, or an orchestra.

The term score can also refer to theatre music, orchestral music or songs written for a play, musical, opera or ballet, or to music or songs written for a television programme or film; for the last of these, see Film score.

They choose the works to be performed and study their scores, to which they may make certain adjustments (e.g., regarding tempo, repetitions of sections, assignment of vocal solos and so on), work out their interpretation, and relay their vision to the singers.

The Ninth asks for a second pair of horns, for reasons similar to the "Eroica" (four horns has since become standard); Beethoven's use of piccolo, contrabassoon, trombones, and untuned percussion — plus chorus and vocal soloists — in his finale, are his earliest suggestion that the timbral boundaries of symphony might be expanded.

Classical musicians playing orchestral works, chamber music, sonatas and singing choral works ordinarily have the sheet music in front of them on a music stand when performing (or held in front of them in a music folder, in the case of a choir), with the exception of solo instrumental performances of solo pieces, concertos, or solo vocal pieces (art song, opera arias, etc.), where memorization is expected.

Symphonies are notated in a musical score, which contains all the instrument parts.