It was 30 years ago this spring -- March 1982 -- that Paul McCartney and Stevie Wonder topped the US and UK charts with their duet, "Ebony and Ivory," off McCartney's Tug of War album. The release of McCartney's new album, Kisses On The Bottom, sees them reunited on one track, "Only Our Hearts," one of two McCartney compositions on the album, a collection of standards McCartney grew up listening to.