"Lyla" is a song by the English rock band Oasis. The song was released as the first single from the band's sixth album Don't Believe the Truth, released in May 2005. "Lyla" was released to American radio on April 12, 2005.

The song was written by Oasis guitarist Noel Gallagher, who has varyingly described the track as "specifically designed for pogoing", "annoyingly catchy", and the "poppiest thing since "Roll with It"". Noting the varied influences of the song, Gallagher says that it's "a bit like... The Soundtrack of Our Lives doing The Who on Skol in a psychedelic city in the sky, or something".

Gallagher says that the song existed in an early form as a song called "Sing" and dated from the Heathen Chemistry-era. He also says that the title for the final song should have been "Smiler", but was changed seeing as guitarist Gem Archer's previous band, Heavy Stereo, also had a song called "Smiler".

Sony's insistence that it should be released as the first single from the album helped to fuel the tension between the band and their record label, which led to Oasis not renewing their contract with the record label following the release of Don't Believe the Truth.

"Lyla" became the band's seventh UK number one, when it reached top spot in the UK Singles Chart in its first week of release. The song also debuted at #31 on the US Modern Rock Tracks chart and has reached #19 since then. It is the first Oasis song to appear on any US singles chart since 2000 when "Go Let It Out" hit number 14 on the Modern Rock chart.

Noel has also joked with the fact that the Lyla in the song is actually the sister of the Sally mentioned in the Oasis single "Don't Look Back in Anger". Also, he had said that the song is a "love song", being about Sally's sister.

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