Hear Paul McCartney and Kanye West's Emotional Ballad 'Only One'

D'Angelo notwithstanding, there were no Beyonce-esque surprise albums for the end of 2014. But as the clock turned on another year Wednesday night, Kanye West unveiled "Only One," a minimal, poignant new track featuring Paul McCartney on keyboard. The song is available to hear on West's website or via the iTunes store. Written from......