After this success Whitfield again wanted Gordy to release Gaye's "Grapevine" as a single, but Gordy did not want to release another version after the Pips had already made a hit out of it. In August 1968, Whitfield added "Grapevine" to Gaye's new album In the Groove. On release "Grapevine" became a radio hit and, according to Gordy himself, "The DJs played it so much off the album that we had to release it as a single". So Gaye's version was released as a single on October 30, 1968. Gaye's "I Heard It Through the Grapevine" eventually outsold the Pips', and until The Jackson 5's "I'll Be There" 20 months later, was the biggest hit single of all time on the Motown label. It stayed at the top of the Billboard Pop Singles chart for seven weeks, from December 14, 1968, to January 25, 1969. Gaye's "Grapevine" also held number one on the R&B chart during the same seven weeks, and stayed at number one in the United Kingdom for three weeks starting on March 26, 1969. The label was pleased with the success, although Gaye, depressed because of issues such as the illness of singing partner Tammi Terrell (which would kill her less than a year later), was quoted as saying that his success "didn't seem real" and that he "didn't deserve it". Cash Box said of it that "tremendous percussion and a brilliant production job add even more luster to a terrific vocal." Due to the song's success, In the Groove was re-issued as I Heard It Through the Grapevine and peaked at number two on the R&B album chart and number sixty-three on the album chart, which was at the time Marvin's highest-charted solo studio effort to date. Because of the success of both versions, "I Heard It Through the Grapevine" was the first and last number one on the Billboard R&B chart in 1968: the Pips version was the first week of January, the Gaye version the last week of December. Gladys Knight was not pleased that Gaye's version usurped her own, and claimed that Gaye's version was recorded over an instrumental track Whitfield had prepared for a Pips song, an allegation Gaye denied. In 1985, one year following Gaye's death, the song was re-released in the UK reaching number eight thanks to a Levi's commercial (starring Nick Kamen). Legacy The Gaye recording has become an