Okay, maybe I'm being a wee bit deceptive in saying I'm posting songs purely played on the in-game instruments (since a lot of them are recorded on the GW2MB interface), but all the songs are playable in-game. Feel free to ask me for the notes since most of them are played by hand. I'm just using this thread to stash my collection of videos. I have both standalone videos and 'play-along' videos with backing music.
Let's start with something by Pendulum -