This is so catchy and melodic! I just made my first song using Goattracker and it was a struggle. Very cool to hear what you were able to do with the SID chip. I like the many different sections of your song, 3:11 is my favorite!
it drives me _n_u_t_s_ when the pulsewidth crosses over zero in a such noticeable way :) i still enjoyed it, and that says a lot of nice things about the song itself!