Based on sales, Boyz II Men is the most successful R&B male vocal group of all time. It recorded five #1 R&B hits between 1992 and 1997 and has sold more than 60 million records . Three of its #1 hits, "End of the Road", "I'll Make Love to You", and "One Sweet Day" (with Mariah Carey), set and broke records for the longest period of time a single remained at #1 on the Billboard Hot 100; the last of them still holds the record. Although "On Bended Knee" did not break any records, it was still an immensely popular song that reached #1 and made Boyz II Men the third artists (behind Elvis and The Beatles) to replace themselves at the number one spot of the Billboard Hot 100.   Wikipedia