Boyz II Men with All-4-One and 98°

All-4-One, a celebrated California-based R&B group, is famed for "I Swear," which topped the Billboard Hot 100 for 11 weeks. Known for hits like "I Can Love You Like That," they've won Grammy and American Music Awards, selling over 22 million records globally.

Boyz II Men, a quartet from Philadelphia, are the most commercially successful R&B group, famed for lush ballads and harmonies. Their hits include "End of the Road" and "One Sweet Day" with Mariah Carey. They've sold millions, winning multiple awards. Formed in 1987, they debuted with Cooleyhighharmony in 1991. They have worked with acts like Michael Jackson, and released albums like II, Twenty, and Under the Streetlight. Despite a member leaving in 2003, they've remained a strong touring group.