1975 turned out to be their most successful year chartwise, with a Top 40 Pop album ("In the City"), the No. 25 hit "Remember What I Told You to Forget", and their biggest hit, the Top 10 Pop/No. 1 R&B smash "It Only Takes a Minute", which was later successfully covered by both Jonathan King and Take That, and sampled by Jennifer Lopez. They parlayed this success into a spot as an opening act for The Jackson 5. KC and The Sunshine Band was also on this tour. "Minute" was followed by a string of hits: "Heaven Must Be Missing an Angel" (1976), "Don't Take Away the Music" (1976), and "Whodunit" (1977, another No. 1 R&B hit). In 1977 they also recorded "I Wanna See You Soon", a duet with Capitol labelmate Freda Payne, which received airplay on BBC Radio 1 but failed to chart.