Great job! This is one of the most innovative takes on the theme I've seen. There's a lot of games with cassettes and records and stuff, but having it control the movement, shooting and boss is genius. I like the controls, and it is laid out on the screen in a way that makes sense if you know the controls, which are on the start page and in the description. I couldn't think of better keyboard controls. One thing that might be fun to play around with that might work is having the mouse control them so you have to move between the records, to make it more frantic, not that it really needs to be. I genuinely can't think of anything to criticize you on. Great job!