"You Made A Believer Out Of Me" is the 1969 single from Ruby Andrew's 1972 "Black Ruby" LP. It's got some killer sisterfunk with tight drumbeats to match. Old school De La Soul fans might recognize the groove from their breakout "3 Feet High And Rising" album. If you enjoy powerhouse soul you can't go wrong with this little R&B gem.
On an interesting side-note for True Blood fans : Ruby's first recording name was Stackhouse.