A grid for beats - repost

I want to create a "beat grid" - like a design on point and pic paper that users can draw in drum beats - 16 across by 16 deep i think. I want it to be a wordpress plugin - it needs to work with wordpress! needs user login (which we can do with wordpress) but alows user to "paint" and upload beat patterns - midi export a nice to have - but t this point can be negotiated. I want a visual representation of beats (drums, kicks, snares, hit hats, toms etc) that a user can paint into a wordpress account and upload. There will be more development on this as the project goes forward. The bidder must have musical knowledge and a high level of UX/UI & CSS to make it look good. I have all the required accounts for Woothemes etc and access to templates. I Am also a seasoned (15 years plus) web designer. Good work going forward for the right person. Must speak good english and be available on Skype sometime in the region of GMT (9.00am - 10.00pm)