Because Ike and Tina recorded for so many labels, no "greatest hits" package is truly the greatest. That said, Proud Mary does a worthy job charting their evolution through the '60s and early '70s. "I Idolize You" and "It's Gonna Work Out Fine" are classics from the duo's earliest days as gritty innovators of Southern R&B and soul. "Come Together" and the title track date from the duo's middle period, when they were wowing longhairs on rock's ballroom circuit. And then there's "Nutbush City Limits": Recorded in '73, it's indicative of their final phase as psych-funk groove merchants.