It was about a girl whose brother dies in a fire at this rock band's concert. Years pass and she sets out to get revenge on them and becomes some sort of VFX/make-up artist? Anyway, they commission her to make molds of their faces for their next album cover and she attemps to kill them all in the process.
I'm starting to feel like I hallucinated the entire thing. Been looking for years and I don't even have a lead, lol.
Here is a list of Horror/thriller movies involving Rock - Here - Some of them sound pretty great
Terror on Tour?
This is probably unhelpful but it sounds like it might be based on the real-life Station Nightclub Fire incident, where pyrotechnics on stage set illegally-flammable building materials on fire and killed dozens of people. If you didn't get out within the first 30 seconds you basically didn't survive. Heartbreaking tragedy, there's video of some it occurring on Youtube but I highly recommend not watching. It's not graphic but it broke me. Happened in 2003.
2010 Groupie. Taryn Manning is in it lol.
It's deffo 00s/10s straight-to-DVD slop that was critically panned. I just remember tween me being blown away by the premise.