Very nice tutorial. It is attractive, very clear, and it has good topics. You asked about the music--it isn't good.. I just muted it immediately. For a tutorial, any sort of calm, and/or repetitive track works best. While I'm sure that song is great to keep you working while making the tutorial, the audience is trying to read and learn. There are tons of trance and techno songs in the NG audio portal that are great.