Cindy Birdsong did not hear Birdsong's voice on most of The Supremes' newest singles. Except for featured backgrounds on several collaborations with The Temptations, live album tracks, and some studio LP tracks, Birdsong and fellow member Mary Wilson did not sing backing vocals on the group's later singles. Session singers The Andantes substituted for Mary and Cindy on many, although not on all, cuts in subsequent Diana Ross & the Supremes albums. Both the "Let the Sunshine In" album and the "Cream of the Crop" album include tracks on which Florence Ballard, Mary Wilson and Cindy Birdsong sing back-up, often in tandem
Floy Joy (album) Mary Wilson, Cindy Birdsong, and Jean Terrell. Appearing on the album cover alongside Terrell and Wilson was new member Lynda Laurence, brought in to replace Cindy Birdsong, who was noticeably pregnant at the time of the photo shoot. Despite appearing on the album cover, Laurence's vocals are not on the album. "Floy Joy" marks for the first time that Mary Wilson had several leads on an album. Wilson takes solo lead on the ballad "A Heart Like Mine." Wilson and Terrell trade-off lead vocals on "Floy Joy" and "Automatically Sunshine", whilst Terrell has sole lead on the album's third single,