Album: Age Ain't Nothing But a Number (1994)

It's not surprising that Aaliyah had an affinity for the Isley Brothers. R. Kelly, who wrote and produced her entire first album, is a self-proclaimed fan of the seminal R&B group. Released as the second single from Age Ain't Nothing But a Number, Aaliyah's cover of "At Your Best," a song written in dedication to the Isley Brothers' mother, was made more even more angelic by her wistful vocals. On an album full of edgy, hip-hop and new jack swing-inspired beats, the ballad was a nice departure that showed a young women on the cusp of adulthood. —Damien Scott