You might take a peek at the Colorado Modular Synth Society:

https://www.facebook.com/groups/1216704935132398

Our local one is https://www.noizemaschin.com/ - they're based in London and Perth Australia, it's kind of a hybrid maker space / underground scene. Good folk from all walks of life.

Not sure about Denver but I did some searches for experimental music, perhaps jump on the local subreddit as it seems there's a small noise music scene but I wasn't able to pinpoint anything specific.