"Back & Forth" is the debut single performed by American singer Aaliyah for her debut studio album, Age Ain't Nothing but a Number (1994). The song was written and produced by R&B singer R. Kelly, and lyrically the song is about a teenager's excitement for partying on the weekend with friends. "Back and Forth" has been described as being a dance/pop/R&B and new jack swing song. Aaliyah sings in a "laid back" style. Blackground and Jive released the song as the album's lead single on April 8, 1994, to generally positive reviews with many critics praising the song's lyrical content and Aaliyah's vocal delivery on the record.

Aaliyah Dana Haughton was an American singer and actress. She has been credited with helping to redefine contemporary R&B, pop, and hip hop, earning her the nicknames the "Princess of R&B" and "Queen of Urban Pop".