Editing Player piano (section)

== Music rolls ==
{{Main|Piano roll}}

[[File:PlayerPianoRoll.jpg|thumb|upright=1.3|A player piano roll being played]]
[[Music roll]]s for pneumatic player pianos, often known as piano rolls, consist of a continuous sheet of paper rolled on to a spool. The spool fits into the player piano spool box whereupon the free end of the music sheet is hooked onto the take-up spool which will unwind the roll at an even pace across the reading mechanism (the "[[Tracker Bar|tracker bar]]") The music score to be played is programmed onto the paper by means of perforations. Different player systems have different perforation sizes, channel layouts and spool fittings though the majority conform to one or two predominant formats latterly adopted as the industry standard.

Music is programmed via a number of methods.
# the music is marked out on master stencil on a purely metronomic basis direct from the printed sheet music with the player-pianists being left to create their own music performance
# the music stencil is created metronomically via a piano-keyboard operated punch machine
# a live performance is played onto a special piano connected to an electronically operated marking mechanism, and a physical stencil is produced from this live output, either as-is or after some general regularisation of tempo where necessary
# modern computer software and [[MIDI]] software can be used to create piano roll stencils for operating modern-day perforating machines and create new titles.

The player piano sold globally in its heyday, and music rolls were manufactured extensively in the US, as well as most European countries, South America, Australia and New Zealand. A large number of titles from all manufacturers survive to this day, and rolls still turn up regularly in large quantities.

It was reported that the last remaining mass producer of piano rolls in the world, QRS Music, temporarily halted production of the rolls on December 31, 2008.<ref>{{cite web| last = Sommer| first = Mark| title = The day the music died: QRS has ended production of player-piano rolls| publisher = The Buffalo News| date = 3 January 2009| url = http://www.buffalonews.com/incoming/article134934.ece| access-date = 12 September 2010| archive-date = 10 June 2011| archive-url = https://web.archive.org/web/20110610220347/http://www.buffalonews.com/incoming/article134934.ece| url-status = dead}}</ref>
However, QRS Music still list themselves as the only roll manufacturer remaining, and claim to have 45,000 titles available with "new titles being added on a regular basis".<ref>{{cite web| title = Music| publisher = QRS Music| url = http://qrsmusic.com/music.asp| access-date = 12 September 2010| archive-date = 5 March 2010| archive-url = https://web.archive.org/web/20100305061344/http://www.qrsmusic.com/music.asp| url-status = dead}}</ref>

The [[Musical Museum, Brentford|Musical Museum]] in Brentford, London, England, houses a nationally significant collection of piano rolls, with over 20,000 rolls, as well as an extensive collection of instruments which may be seen and heard.<ref>{{Cite web|title=About |url=https://www.musicalmuseum.co.uk/about-us|access-date=2021-12-17 |website=The Musical Museum |language=en |url-status=dead |archive-url=https://web.archive.org/web/20211217214839/https://www.musicalmuseum.co.uk/about-us |archive-date= 2021-12-17 }}</ref>