All-4-One

Comprised of Tony Borowiak, Jamie Jones, Delious Kennedy, and Alfred Nevarez, the Californian contemporary R&B vocal quartet All-4-One's 1994 debut album sailed into the Top Ten thanks to the enormous hit single "I Swear," which stayed at number one for 11 weeks. My Brother's Keeper followed in 1998, and a year later the group returned with On and On.
Stephen Thomas Erlewine, Rovi