"Say Something" is a song recorded by American producer, songwriter and rapper Timbaland, for his third studio album Shock Value II (2009). The song features vocals from Canadian rapper Drake. It was written by Mosley, Jerome Harmon, Graham, Timothy Clayton and John Maultsby. The production was helmed by Mosley under his stage-name Timbaland while Harmon served as the assistant producer, under the stage-name Jroc. The song was tailored to Drake's sound and when the rapper wrote to it, he contacted the producer about the lyrics. Despite the verses feeling more like Graham's record, Mosley gave his blessing and went the product. The song was solicited to digital retailers on November 3, 2009 in the United States as the album's second single.

"Say Something" is an electro-rap song with a slow moving beat and feel. Lyrically, it portrays an interaction between Graham and a woman and the awkward feel to it, that is influenced by past events that occurred between them. "Say Something" garnered generally mixed reviews from music critics; many of them praised it as a "radio hit" but felt it fared worse than Drake's previous works and believed it highlighted Timbaland's weaknesses as a vocalist. Since its domestic release, the song has reached number twenty-three on the Billboard Hot 100, standing as the second highest charting single from Shock Value II in the United States. The music video for the song was directed by Paul "Coy" Allen features appearances from Sebastian, D.O.E., Attitude and DJ Freestyle Steve.

"Say Something" was written by Timothy Mosley, Jerome Harmon, Aubrey Graham, Timothy Clayton and John Maultsby. The production of the song was helmed by Mosley under his stage-name Timbaland and by Harmon under his stage-name Jroc; the latter is credited as the co-producer. The pairing of Timbaland and Drake came about through a discussion between Mosley and Jay-Z. In an interview with Shaheem Reed of MTV News, Mosley quoted him saying "'Yo, man, you gonna wanna get in the studio with this guy named Drake. I'm telling you. He's the next cat.'" Mosley, Graham, and Harmon have collaborated on "Off That", featured on Jay-Z's eleventh studio album The Blueprint 3 (2009). Timbaland stated that he was attracted to Drake because of his tone, saying "His tone is ridiculous right now. I love his tone."

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