The music is super cool, I loved it! Very fun game, but I had a big problem with hitting the 'sun' notes especially, I had them all as a 'miss' and I didn't know why as I tried hitting them at different points but then I realised that I was supposed to use space for them and not an up arrow. I think the up arrow would be more intuitive.
But other than that it was a super fun rhythm game and as I said, the music was great!