Editing In C (section)

{{Short description|1964 musical composition by Terry Riley}}
{{Italic title}}
{{about||the album by Acid Mothers Temple & The Melting Paraiso U.F.O.|In C (album)}}
{{use mdy dates|date=February 2025}}
{{Infobox musical composition
| name                = In C
| composer            = [[Terry Riley]]
| image               = Incipit of Terry Riley's In C.png
| image_upright       = 1.5
| alt                 = Incipit of ''In C''
| caption             = Incipit of ''In C''
| translation         = 
| native_name         = 
| native_name_lang    = 
| key                 = [[C major]]
| catalogue           = 
| opus                = 
| genre               = [[Minimal music|minimalism]]
| form                = open
| text                = 
| language            = 
| melody              = 
| client              = 
| composed            = March 1964
| performed           = {{Timeline-event|date={{Start date|1964|11|04|df=y}}|location=San Francisco Tape Music Center}}
| published           = <!-- {{Timeline-event|date={{Start date|YYYY|MM|DD|df=y}}|location=}} -->
| movements           = 
| scoring             = open
| misc                = 
}}
'''''In C''''' is a composition by [[Terry Riley]] from 1964. It is one of the most successful works by an American composer and a seminal example of [[minimal music|minimalism]]. The score directs any number of musicians to repeat a series of 53 melodic fragments in a guided improvisation.

Terry Riley's 1968 recording of ''In C'' was added to the [[National Recording Registry]] in 2022. The piece inspired countless other composers, including [[Philip Glass]], [[Steve Reich]], [[John Adams (composer)|John Adams]], and [[Julius Eastman]].