Left to right: Nona Hendryx, Sarah Dash and Patti LaBelle perform as Labelle in Los Angeles, circa 1975. Michael Ochs Archives/Getty Images hide caption

Darlene Love in 1964. Love was the uncredited singer on a handful of the biggest hits produced by Phil Spector during the era when he was making his "Wall of Sound" production technique famous. ABC Photo Archives/Walt Disney Television via Getty hide caption