Today I got accross Somebody that I used to know acappella by Pentatonix. At first when I saw it I tought that it’s just another lame cover, but I was wrong! The song is acappella which means that they do all the stuff by their mouth. The background music, drums,… everything! They are truly amazing. But still I think that the original song/version is better. Whell, anyway here is the video. Enjoy!