I think the problem is the tune isn't really a collective effort – it's like the guy at middle school who invited people round so they could watch him play N64 .. "Can I have a go?" "Thing is I've only got the one controller." .. We all knew that guy. This is why you want to do the doubling method .. Everyone write a bar .. Vote on the best bar .. Everyone download the project (or wav if easier) and double it .. Everyone vote on the best 2 bars, etc. Repeat. True design by committee.