Fictionalized version of...
Based on press and the filmmakers' description, it sounds like it could only be the Replacements.
I long thought about trying to do a Replacements film (non-fiction). It's a great story, with great music from the last time the music scene meant a damned thing.
Best of luck, Alex Steyermark! You've set the bar pretty high for yourself.
One foot in the door, the other one in the gutter...