The Sweet Inspirations. You've heard them a thousand times without knowing their names. They were Aretha Franklin's backing vocalists. They were on Brown Eyed Girl. They backed Dusty Springfield on Son of a Preacher Man. They sang behind Elvis in Vegas. Cissy Houston founded them -- Whitney's mother -- and when she left for a solo career, the group kept going. The sound of gospel-trained women bringing the church to the studio, making every record they touched a little more holy.