Musical compositions

thumb|upright=1.2|American jazz singer and songwriter Billie Holiday in New York City in 1947 A song is a musical composition performed by the human voice. The voice often carries the melody (a series of distinct and fixed pitches) using patterns of sound and silence. Songs have a structure, such as the common ABA form, and are usually made of sections that are repeated or performed with variation later. A song without instruments is said to be a cappella.

An instrumental, instrumental music, or sometimes "instrumental song" is music without any vocals, although it might include some inarticulate vocals, such as shouted backup vocals in a big band setting. Through semantic widening, a broader sense of the word "song" may refer to instrumentals. The music is primarily or exclusively produced using musical instruments. An instrumental can exist in music notation, after it is written by a composer; in the mind of one or more composers in question (especially in cases where he/they will perform the piece, as in the case of a blues solo guitarist or

Longplayer is a musical composition made by British composer and musician Jem Finer which is composed to play for 1,000 years without looping. It started to play at midnight on 31 December 1999, and is expected to continue without repetition until 31 December 2999.

well-known musical composition, considered part of the "standard repertoire" of one or more musical genres