"S.O.S. (Let the Music Play)" is a song performed by American R&B and pop recording artist Jordin Sparks. It is the second single from her second studio album titled, Battlefield. The song was released first in New Zealand on August 14, 2009 and was sent to US radio on September 29, 2009. It was released in the United Kingdom on October 12, 2009.

"S.O.S. (Let the Music Play)" is a dance-pop song which contains a sample of "Let the Music Play" by Shannon. It combines 1980s synths with modern techno-dance beats. Sparks explained why she decided to go in a dancier direction with this song: "I'll always be the ballad girl from American Idol, but I wanted to try something new, though not so far that people wouldn't believe me." The video was shot in Los Angeles, California on August 10, 2009, with Chris Robinson serving as the director. He also worked with Sparks on the "No Air" music video.

As of May 2014, the single has sold 111,000 digital downloads in the United States.

Reviews for the song were generally positive with critics praising Sparks' attempt at dance-pop. Nick Levine of Digital Spy said "Two excursions into dance-pop territory, the stomping, Shannon-sampling 'SOS (Let The Music Play)' and the boyfriend-baiting 'Emergency (911)', also do the business".The New York Times said "intriguingly, the music on that song ('Emergency 911'), and another club track, 'S.O.S. (Let the Music Play)', evokes the brazen dance-pop of Lady Gaga." A critic from Rolling Stone criticized the album and said that Sparks' album "falls flat on 'S.O.S. (Let The Music Play),' a piece of bland disco that wishes it were 'Just Dance.'"The Guardian appeared to praise Sparks for attempting a song that was more urban, stating that the "squelchy electronics and a relatively earthy lyric ('Look in her eyes, she's mentally undressing him') give 'SOS' an urban hue."

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