Rosalind Ashford helped the group to distinguish themselves from the other girl groups in the label including the pop-oriented Marvelettes and the doo-wop-influenced Supremes with a rougher, brassier gospel-influenced sound. Reeves was a brassy alto while Annette was a deep contralto, and Rosalind was a high soprano. Like the Supremes' Florence Ballard, the Marvelettes' Wanda Rogers and The Four Tops' Abdul "Duke" Fakir, Ashford registered as the high background vocal in Vandellas records. After "Quicksand" gave the group a third top forty pop hit, Beard left to start a family with her new spouse. Reeves recruited a former member of The Velvelettes,
Russ Ballard (which was produced by Phil Collins, and also featured Collins on drums). The track reached No. 13 on the Billboard Hot 100. He also penned "Can't Shake Loose" for fellow ABBA former member Agnetha Fältskog, which peaked at No. 29 in the same listings. In 1991 the song he co-wrote with John Waite and Jonathan Cain, "So This Is Eden", appeared on Bad English's album, "Backlash". Ballard has also written and produced for Elkie Brooks, and in 2005 acting as a talent scout, he "discovered" Lauren Harris. As a solo artist, Ballard charted once on the US "Billboard" Hot 100