Just a little of what I found!

I founds some really good videos. These two are singers. 

http://www.telegraph.co.uk/men/the-filter/virals/10700075/Man-sings-Let-it-Go-in-voices-of-Disney-and-Pixar-characters.html

I loved this one. I thought that he sounded just like the characters. :). I think you should watch for yourself. 

http://time.com/33370/watch-nun-stuns-the-voice-of-italy-judges-with-amazing-alicia-keys-cover/

I loved this. The reactions of the judges is priceless :). I say. MUST SEE!!!!!

TTFN :)