Thanks!
I agree that I really should have made the music loop much, much longer, that's definitely a skill I need to improve.
Also, yeah I was intending to increase the movement speed but it kept slipping my mind.
What I wanted to add but ran out of time (besides for more block types and bullet patterns) was bullets which would hit the tower and nudge the blocks there. You would need to block them then withthem with your ship, kinda like an opposite version of what is already there.