In case you've been living under a rock, Justin Timberlake is back. And not only is he back, he's everywhere. Having just performed on Saturday Night Live, the R&B singer performed a stirring rendition of "Mirrors" on Late Night with Jimmy Fallon last night. His new album, The 20/20 Experience, is streaming now on iTunes. Watch that clip above.

Below is a clip of Timberlake performing "SexyBack" with a barber shop quintet. Let the hilarity ensue.