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
Otis Birdsong his career at the end of the 1988–89 season. As a college freshman, Birdsong finished third among the team's scoring leaders with 14.3 points per game. The following year, Birdsong etched his name in the University of Houston's record books by becoming the first sophomore in the school's history to register 1,000 career points. When the Cougars began playing in the Southwest Conference, Birdsong soon established himself as the dominant scorer in the league's history. In his first year as an SWC player, Birdsong led the league in scoring, finishing eighth nationally with a 26.1 average. Birdsong was named a