piano roll


piano roll

n. A roll of paper containing perforations corresponding to the notes of a musical composition, used in operating a player piano.

piano roll

n (Music, other) a perforated roll of paper actuating the playing mechanism of a Pianola. Also called: music roll

pian′o roll`


n. a roll of paper containing perforations such that air passing through them actuates the keys of a player piano. [1925–30]

Piano roll

The perforated roll of paper that controlled the hammers of a Player piano.