I seriously love the idea behind Laserwave!! Judging by the number of people asking for more, it looks like I'm not the only one.
It would be really fun to make some music for this game! I made 2 demos for ya. Here is the first one, and here is a more retro one.
(The rhythm patterns for these are (1) this and (2) this.)
If you like these you can message me on twitter @mistwinsounds and I would be very happy to make more.