Bigger Than 'Yeezus': Kanye West Plots Collab With Paul McCartney, Rihanna, Ty Dolla Sign

If you listen off in the background of "Only One," Kanye West's sentimental New Year's Day collaboration with Paul McCartney, you'll hear some autotuned crooning that belongs to a lesser known songwriting great, the R&B singer Ty Dolla $ign...