Boyz II Men feat. Morris Day and the Time
Based on sales, Boyz II Men is the most successful R&B male vocal group of all time. They recorded five number 1 R&B successes between 1992 and 1997 and have sold more than 60 million albums. Three of its number 1 hits, "End of the Road", "I'll Make Love to You", and "One Sweet Day" (with Mariah Carey), set and exceeded records for the longest period of time a single remained scored at number 1 on the Billboard Hot 100; "One Sweet Day" still holds the record.