piano duet
File:Latsos Piano Duo at Teatro Metropolitano Medellin.jpg in Teatro Metropolitano]]
According to the Grove Dictionary of Music and Musicians, there are two kinds of piano duet: "[pieces of music] for two players at one instrument, and those in which each of the two pianists has an instrument to themselves." In American usage the former is often referred to as "piano four hands".{{cite book |last= Kuhn |first= Laura Diane |author2= Nicolas Slonimsky |year= 2001 |title= Music since 1900 |location= New York |publisher= Schirmer Reference |isbn= 0028647874 |page= [https://archive.org/details/musicsince190000kuhn/page/81 81] |url-access= registration |url= https://archive.org/details/musicsince190000kuhn/page/81 }} Grove notes that the one-piano duet has the larger repertory, but has come to be regarded as a modest, domestic form of music-making by comparison with "the more glamorous two-piano duet".Dawes, Frank. [http://www.oxfordmusiconline.com/subscriber/article/grove/music/21629 "Piano duet"], Grove Music Online, Oxford Music Online, accessed 31 March 2012 {{subscription required}} The latter is more often referred to as a piano duo.Bellingham, Jane.
[http://www.oxfordmusiconline.com/subscriber/article/opr/t114/e5157 "piano duet"], The Oxford Companion to Music, Ed. Alison Latham, Oxford Music Online, accessed 31 March 2012 {{subscription required}}
The piano duet came to popularity in the second half of the 18th century.