"Say You Do" was the third single from Janet Jackson's self-titled debut album Janet Jackson (1982). The song was written by René Moore & Angela Winbush. The specially remixed version of the song appears on CD versions of Jackson's debut album, Janet Jackson, while a shorter, slightly different version appears on vinyl and cassette versions of the album. It peaked at number fifteen on the R&B chart, and eleven on the dance chart. This was her third top 20 R&B and first top 20 dance single. An edited version of the song exists.For the first time, Jackson included the song on her 2008 "Rock Witchu Tour". Jackson also included the song in her performance at the 2010 Essence Music Festival, held in New Orleans, Louisiana.