Ain't It Funny

"Ain't It Funny" is a song by American singer Jennifer Lopez. It was written by Lopez and Cory Rooney for the Adam Shankman-directed romantic comedy The Wedding Planner (2001). Shankman, however, felt that the song had too much of a Latin-influence to be featured in the film, and it was instead included on Lopez's second studio album, J.Lo (2001). "Ain't It Funny" was released as the third single from the album on June 20, 2001, by Epic Records. The song was used as background music in three television advertisements in Japan to promote the 2001 Subaru Legacy for a special campaign which was known as Three Keys Legacy. Lopez herself was also featured in all three ads.[1][2][3] The song shares the same title with Lopez's 2002 song "Ain't It Funny (Murder Remix)", which is a completely different song.[4]