thats better matt. when ive done posters for gigs in the past Ive been told who the headline band is so Id check to make sure Part Chimp are the major players for that night otherwise it wouldnt make sense to base the whole concept around them.
this is purely my opinion but I actually prefer the original poster. I understand you wanted to try something new and its obvious you have been heavily influenced by the tutorial above but for clarity and style I prefer the first version. I think posters need to be clear and concise, they only grab peoples attention for a matter of seconds so if there is too much going on then the message will get lost.
Like Berry said, design is about communication, not aesthetics.Its crucial that your message is first and foremost in your design.