"Obsessed" is a song by American singer Mariah Carey from her twelfth studio album, Memoirs of an Imperfect Angel (2009). The song was written and produced by Carey, Terius "The-Dream" Nash and Christopher "Tricky" Stewart, and was released as the album's lead single on June 16, 2009, by Island Records. The song draws musical influences from R&B and hip hop music, and is built around a thumping bass line. Additionally, the song is accentuated by hand claps, while Carey's voice is processed with Auto-Tune. Lyrically, the song describes Mariah's dilemma regarding constant claims of a prior relationship from rapper Eminem, although he is not specifically mentioned.