I always feel bad judging these sound mixer games because they're not my forte. This one seems simple but with the potential for some serious depth. I'll just rate it what everyone else is.

Pretty basic sound mixer here, can't say I liked the interface that much as it took a really long time to drag out the boxes to where you wanted and figure out what each sound actually was. Not to mention that you couldn't change the speed of the beat.

umm

grate idea bad execution

...

Gosh i really liked this idea that you had it was a shame that it took so long to create a solid beat but it was worth it!

things you need in order to make this functional

allow random clicks on the field to automatically place the last beat choosen by the user. group all of the bass lines together as well as sfx etc.
put a number in the middle of the blocks so its easyer to figure out which beat you want to use again! make a snap to option which can be turned on or off so note placement isnt so teidious. im verysure im leavitn things out but oh well. some1 else will bring it/them up.