I almost don't count brickwalled tracks because there are so many of them.
Anyway, let me show you the lovely piece of work I'm currently trying to iron out. It's an obscure album of obscure performances of mostly obscure Baroque chamber music. And it has some of the most wonky balance I've ever heard, usually with ridiculously loud upper midrange. I've been trying to do a global EQ on each work (usually they span three tracks or so) in order to make the album listenable. Here's the curve I've come up with to fix one of the works (which spans four tracks):
Yeah, just take that in for a second. You don't want to hear what the tracks sound like raw. They're shrieky, shouty, piercing, boomy, and tizzy all at once. It gives me a headache in about 0.4 seconds.
Here's the spectrum analysis before and after the curve has been applied:
Nothing healthy has an upper midrange bump that prominent. Compensated it's like a completely different recording. The production still isn't fantastic, but at least the timbre of instruments actually sounds mostly correct, and I can enjoy listening to it. I'm still tweaking the curve, but the fundamental bits are all in place.