Linkin Park - Don't Stay (COVER)

A little goodie from back in the days when Linkin Park became popular. Don't Stay is the opening song on the Meteora Album 2003, but wasn't released as a single (half the albums songs were though...!).
I recorded this song in August 2015. At that time I kind of felt like I needed to play something more... loud... heavy... raging... So I chose this song as it was fast & easy to learn. Tried to keep to the original, but make it even a little more Metalcore. You may decide if I succeeded or not, let me know!
And here's a riddle for you:
There is an instrument in the recording, which I faked completely. Can you guess what it is?