Gladys Knight & the Pips’ hit single “On and On” is from the Seventies, specifically 1974.
The song was released in April 1974 on Buddah Records and was associated with the soundtrack album for the film Claudine. Curtis Mayfield wrote and produced the Gladys Knight & the Pips version, which helped connect the group’s powerful soul vocals with Mayfield’s socially aware and cinematic songwriting world.
“On and On” was not merely a minor period release. It reached number two on the U.S. R&B chart and number five on the U.S. pop chart in 1974. Its success placed it firmly within the soul and R&B landscape of the decade, alongside the group’s other major recordings.
A historical wrinkle is that Mayfield had first recorded a related version with the Impressions in 1972 under the title “Our Love Goes On and On.” He changed some lyrics and re-recorded it with Knight and the Pips two years later. That earlier recording can cause confusion, but the Gladys Knight & the Pips hit itself belongs to the 1970s.