also, this is really cool for a web app. if you want more functionality out of a sequencer, look into fruityloops or something of that nature.
here's a take on 1979 by the smashing pumpkins: http://notepad.cc/share/oW0354lMmX
a few suggestions: move the achievement announcement box so that it doesn't pop up on top of the action, lighten up the background so that the bugs stand out and don't blend into it, and maybe change the spinning reload mouse cursor to a timer gauge. great game otherwise!
Welp, on the last level I found it easier just to open all the lights and hope nothing went wrong. Much better results than actually trying to juggle all the lanes.