With an estimated 250 million in album and single sales, Rock and Roll Hall of Famer Rod Stewart arguably possesses one of rock's greatest and most distinctive voices. With that immediately recognizable husky voice, the gravel-toned wonder has successfully commanded nearly every genre of music including folk, rock, soul, R&B, blues and more.

Hailing from California, The Righteous Brothers produced some of the most indelible songs of the 1960s, including 'You've Lost That Lovin' Feelin', 'Unchained Melody' and 'Ebb Tide'. Originally formed of Bill Medley and Bobby Hatfield, the duo's relationship wasn't almost the most amicable but there was no doubting the incredible harmonies they conjured up on stage.