I've had loud Tinnitus since the 90's, and also suffer bouts of hyperacusis (extreme sensitivity to sound, which is even worse than Tinnitus). So I've had to be quite
careful over the years. Several years ago I had a "retraining" therapy to address the hyperacusis, which helped a lot. I now listen louder than I have for years.
To your questions:
1 - Yes. I've been able to enjoy music all these years even with T. Sometimes it has interfered, because sometimes I have "reactive tinnitus" which means it's not percieved as a constant volume (which can be masked with louder sounds) but it reacts to sound getting louder, so rides atop the sound. When that's happening I often take a break from listening to music. But overall I'd say I've lost little listening time over the years to Tinnitus.
2. I no longer go to see live music. Which is one of my great sorrows as it was among my favourite things to do. But every time I try I've ended up paying a heavy price, so now it's not worth it. This is one reason, I think, that I seek a life-like semblence in my sound system, as a sort of substitute for the real thing.