I've been learningfor a bit, and whilst the notes are pretty simple the percussion noises are giving me problems. I've noticed that in the tab the x's for percussion are on the D and G strings, but at the moment I can only do the noises by slapping my thumb on the E string.
In the video the kid seems to use his index finger on those two strings which allows both the base and melody to ring out. When I'm using my thumb the bass line stops. I'm at a loss as to how to get the percussion using just my index finger on those two strings and I'm not sure what to google, please help its an awesome song!