Kelly Clarkson might have some heavy competition when it comes to performing creative covers. Sam Tsui, a 20-year old singer/songwriter and music major at Yale University, has become a small Internet star after uploading videos of himself singing medleys… with himself. His green-screened Michael Jackson medley video was so popular on YouTube that even Time Magazine had to talk to him. Now he’s back with an acoustic Lady Gaga medley featuring songs from The Fame and The Fame Monster, which you can rock out to after the jump.

Lady Gaga medley

And just in case you hadn’t signed onto YouTube in a few months and missed it, here’s Sam’s MJ medley. And yes, those are all Sam.

Michael Jackson medley

Check out Tsui’s MySpace Music page to hear some more impressive covers, including Beyoncé’s “Halo” and Journey’s “Don’t Stop Believing,” which should give the Glee kids a serious run for their money.