Lois and original Vandellas member Rosalind Ashford often had to share background work with The Andantes behind Martha as Motown was limiting the sounds of background vocals. Since the Andantes played a pivotal role in the Motown sound, it's often confusing as to which members of the Vandellas sang on the recordings with Martha. It's confirmed, though, that Lois sang on Vandellas hits such as "I Should Be Proud" and "Bless You" and the entire "Black Magic" album, the Vandellas' final album, released in 1972.