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Other than no templates and the long list of caveats and workarounds, #mobilizon would do all of what I need, if it worked. I believe it was originally meant for planning protests; music is our protest 
Sadly support collapsed years ago. A new agency recently took over, they released one update that then fucked up the calendar widget and have been busy on other things since. It was SO close 
I could do all this with ordinary WordPress, but where's the fun in that?