Gladys Knight has never been pigeonholed by her early Motown years. With her backing band The Pips she was one of the label's brightest stars in the late sixties, recording, amongst others, the original version of I Heard it through the Grapevine. She isn't nicknamed 'The Empress of Soul' for nothing. Since then, however, she's dabbled in jazz, R'n'B, and gospel, and secured her place in the annals of movie history with the theme from 1989's Bond film License to Kill.

Smooth soul crooner Jeffrey Osborne rose to prominence as the frontman and lyricist of popular RnB and Funk outfit LTD in the late 60s and 70s, but secured a lasting legacy as a solo artist with five gold and platinum albums to his name, including the classics Stay With Me Tonight and Only Human.