There is almost always a live room open 24x7. Activate "adult" (rooms are rated R, G, etc...you need to enable "adult" to see the R rooms). Then expand "Live Music."
Some excellent players to look for: Blind Boink, Shooter Ciao, and others.
Paltalk is simple and fun. For the best sound, though, go to Second Life - but not for the technically squeamish...lol