I found these movies on youtube. Thought they were quite funny! Someone just made KK Slider sing popular songs.

Who Let The Dogs Out: http://www.youtube.com/watch?v=WjekSwXrl7c
Eye of the Tiger: http://www.youtube.com/watch?v=3tD8R1dLNIs
Super Mario Bros.: http://www.youtube.com/watch?v=M2KX9ovi0PE
Master of Puppets: http://www.youtube.com/watch?v=c_o0o3toOKs
Tequila Sunrise: http://www.youtube.com/watch?v=RUBtTGra6QQ
Classical Gas: http://www.youtube.com/watch?v=aRJcOPLn7nw
Imagine: http://www.youtube.com/watch?v=KlDYu3303RE
Stairway To Heaven: http://www.youtube.com/watch?v=U-58idAJSJ4

edit:
Final Countdown http://www.youtube.com/watch?v=mnWBTT2LFLE
Child in Time: http://www.youtube.com/watch?v=rFXmpkhuaA0

Especially Master of Puppets and Eye of the Tiger are well done.
Who Let The Dogs Out sounds funny but very different from original.

Wow, thanks for sharing!

I wonder how they make those songs....

description says he's using a soundfont and a modified midi-file.

Saw he made a new one of Final Countdown: http://www.youtube.com/watch?v=mnWBTT2LFLE
and Child In Time (fantastic version!) http://www.youtube.com/watch?v=rFXmpkhuaA0