The group had its first hit almost immediately late in 1968 with "Not on the Outside", which reached No. 13 on the R&B chart and No. 57 on the Billboard Hot 100 (with Greene on lead vocal).
The band achieved its first major success almost immediately towards the end of 1968 with "Not on the Outside", which topped the R&B chart at No. 13 and reached No. 57 on the Billboard Hot 100, thanks to Greene's lead vocals.