Popular YouTube user Sam Tsui is back with more Britney content - this time, he's created a Britney Spears medley featuring 14 of her best hits, including '(You Drive Me)Crazy', 'Womanizer' and 'Till The World Ends'.

The montage-style video and layered vocals seem professionally done, like all of his videos, and could compete with popular YouTube music sensation Karmin.

We're huge fans of his musical style and creativity, as he's covered other artists such as One Direction, Kelly Clarkson, Adele and Rihanna. What song do you think he should cover next?

Watch Sam Tsui’s Britney Spears Medley