Very cool that you were able to make a rhythm game like this in a week. Song was pretty good, but got a bit repetitive after a few more goes. I'll be honest once the G key got involved it was a bit too chaotic for me. I guess with more plays I could have memorized the asd parts so I wouldn't have to think about them as much.
Also great use of the theme. I was thinking the game was a bit boring in the beginning and came to the comments to see if other people thought the same. Then realized you could unlock more band members by getting better scores. Having the other band members definitely makes the song better and the game more fun, so the entire game is stronger together.
My only suggestions are more effects when you hit a note, maybe a faster note mode so they don't bunch up as much, and an indicator of when you unlock the next band member.
Great game!