Pop Music Trivia

Wizard101 Free Online Game KingsIsle Entertainment
Other great family friendly free online games by KingsIsle
According to Billboard, what was the most popular song of 2012?
"Somebody that I Used to Know" by Gotye
"Lights" by Ellie Goulding
"Call Me Maybe" by Carly Rae Jepsen
"We Are Young" by fun.