Last night I watched a documentary called Trekkies 2. Watching this film, I learned about the existence of Star Trek tribute bands. There's No Kill I, NKI:TNG, Warp 11, The Shatners, and others.
No Kill I
There's also a Klingon metal band in the movie. They're from Portland and call themselves "Stokovor," but I didn't find a website for them. Which makes me wonder if they really exist.