I have never cared less about popular music than I did in 2013. Let's all just admit it; most popular music sucks dog-ass these days. Rock n' roll doesn't rock anymore. I just can't work up half an ounce of give-a-crap for all the chanty, twee post-alt pop rock, and that's the inoffensive stuff.
For my own part, I listened to jazz, funk and soul almost exclusively.
That being said, one name did pop up, and that name was Pharrell Williams. Two songs grabbed my ear this year, and they both featured him.
Evidently he also had something to do with "Blurred Lines" but I like myself too much to allow that one in my ears.