Valeria (Japanese: ヴァレリア) is a 1965 chamber music composition by Toru Takemitsu, recomposed from an earlier work, Sonant.
Takemitsu wrote the piece for the 6th Modern Music Festival in Tokyo in 1965 for an ensemble comprising violin, cello, guitar, two bandoneons and two flutes.
Four years later he adjusted its scoring, replacing the bandoneons with an electric organ and the flutes with piccolos, and applying the title Valeria.
Hiroshi Wakasugi conducted the premiere in September 1969, and a recording at Polydor Studio 2 in Tokyo was produced at the end of that month.
In Section II, named "Recitative I", morbid measures for the electric organ are soon lightened by the guitar but then copied in the violin.