Justin Bieber and LMFAO seem like an odd mix. You have faux-apologetic party rockers and shot drinkers Redfoo and Sky Blu buddying up with the clean cut Bieber, who won't even be able to take a shot legally for another three years.

But the dance rap duo and the crooning Canuck both love to "shake that," and sometimes that's all you need.

LMFAO's large fro-ed frontman, Redfoo, even introduced Bieber to Far East Movement, resulting in the ultrahot 'Live My Life.' But the fun didn't stop there -- Redfoo even remixed the track and premiered it during one of his own DJ sets. That's what friends are for.