Fun.'s Nate Ruess and Janelle Monáe perform on "The GRAMMY Nominations Live!! — Countdown To Music's Biggest Night" on Dec. 5 in Nashville. Tune in to the 55th GRAMMY Awards on 2/10/13 on CBS! #TheWorldIsListening Photo: Kevin Winter/Getty Images

Dierks Bentley and the Band Perry perform on "The GRAMMY Nominations Live!! — Countdown To Music's Biggest Night" on Dec. 5 in Nashville. Tune into the 55th GRAMMY Awards 2/10/13 on CBS! #TheWorldIsListening

Luke Bryan performs at the #GRAMMYNoms Concert on Dec. 5th in Nashville. The 55th GRAMMY Awards airs 2/10/13 on CBS! #TheWorldIsListening Photo: Kevin Winter/Getty Images

L Cool J, Taylor Swift and Adam Levine onstage at "The GRAMMY Nominations Live!! — Countdown To Music's Biggest Night" on Dec. 5 in Nashville. Tune in to the 55th GRAMMy Awards 2/10/13 on CBS! Photo: Larry Busacca/Getty Images

55th GRAMMY Awards - Best Pop Vocal Album Nominee. 'Some Nights' Fun. Don't forget to tune into Music's Biggest Night on 2/10/13!

Adam Levine performs at the #GRAMMYNoms Concert in Nashville on Dec. 5th. The 55th GRAMMY Awards air 2/10/13 on CBS! #TheWorldIsListening Photo: Christopher Polk/Getty Images

Black Eyed Peas perform "I Gotta Feeling" during "The GRAMMY Nominations Concert Live!!" in 2009. The 55th Annual GRAMMY Awards air 2.10/13 on CBS! #TheWorldIsListening Photo: Michael Caulfield / WireImage. com

Fun.'s Nate Ruess | GRAMMY.com

Pin your way to the 55th Annual GRAMMY Awards! Click through for details.

#TheWorldIsListening - Feb. 10, 2013 on CBS! #GRAMMYs

Nate performing Carry On at the Grammys

Fun. | GRAMMY.com

UNIVERSAL CITY, CA - JUNE 01: Singer Nate Ruess of Fun performs at rehears... Nate Ruess of fun. YUMMMM!!!! ~,~ Celebrity Celebrities band bands groups music singing acoustic tour hot Nate Ruess (fun.) Obsession! ~,~

Nate Ruess can apparently fly. Fun.

55th GRAMMY Award Nominee - Best R n B Performance // Usher - Climax

Go inside the nominations for Best Alternative Music Album for the 55th Annual GRAMMY Awards

nate ruess

Nate Ruess of fun. : Entertainment

55th #GRAMMYs | Feb. 10, 2013 #TheWorldIsListening

Nate Ruess

Nate Ruess Photo - 2012 MTV Movie Awards - Rehearsals