Interpolation (also known as replayed), especially in "20th-century music and later, is an abrupt change of musical "elements, with the (almost immediate) resumption of the main "theme or "idea. Pieces that are cited as featuring interpolation, among other "techniques, are Music for Brass Quintet by "Gunther Schuller and Threnody to the Victims of Hiroshima by "Krzysztof Penderecki, both 1960–61.
This device is commonly used to extend what would normally be a regular "phrase into an irregular and extended phrase. Such expansion by interpolation is achieved by the addition of extra music in the middle of a phrase (commonly through the use of "sequence). A clear example exists in the second movement of "Mozart's Piano Sonata No. 10, K.330.["citation needed]
Formerly, in the sung portions of the "Mass, such as the introit or kyrie, it was permissible, especially during the medieval period, to amplify a liturgical formula by interpolating a farse (from Medieval Latin farsa, forcemeat),["clarification needed] also called "trope. This might consist of an explanatory phrase or verse, usually in the form of an addition or paraphrase, often in the "vernacular.
In "hip hop music, interpolation refers to using a melody – or portions of a melody (often with modified lyrics) – from a previously recorded song, but re-recording the melody instead of "sampling it. Often used when the original artist or label declines to license the actual sample, since re-recordings (covers) are subject to "compulsory licenses.
Example: ""Ghetto Supastar" by "Pras features a "hook sung by "Mýa that was originally written in the song ""Islands in the Stream" by "Kenny Rogers and "Dolly Parton. The song "I'll Be Missing You by "Faith Evans and "P. Diddy is an interpolation of "Every Breath You Take by "The Police.