Now this is a song with real cross-generation appeal! Legendary one-time Beatle Paul McCartney has teamed up with Kanye West and Rihanna to deliver a new song called “Four Five Seconds” that features a terrific duet between Rihanna and West with Sir Paul strumming the guitar in the background. The song’s bridge also features some gospel-inflected organ playing as Rihanna sings a confessional about her past mistakes.
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