I finished level 1 to 3 with the 7 Nation Army riff and of course redisined level 1 to 3 so that the obstacles match the rithm of seven Nation Army. I also started with a level with chrods, but first I want to make a chord catalog where you can look how to play each chord you need for the level or, respectively the song. Here is one of the levels preview (it’s level 3) :