Welcome Back World! As we close out the year, here on the Party Hour we'll be taking a look back at the music that supplied our song track for the year with a Best Of 2012 playlist. Check out some of the most successful artist from this year including tracks by Fun, Major Lazer, Rusko, Santigold and many others. The show also features some of the new and emerging popular genres of music including EDM and a Trap Remix. Plus, Find out which artist in tonight's show have a big show going down in NYC.