What musical artists deserve their own encyclopedia?

I would only put bands that either really did have a huge influence on not just music but the outside world as well. For example, I wouldnt put Fleetwood Mac just because theyre extremely popular and practically everybody knows about them. I would include Nirvana, they influenced a whole decade of angst ridden teens/young adults of Generation X, and later on, millions of fans/bands around the world. A suprise entry I would include would be U2, espically Bono, he should get half the book to himself on his humanitary work and everything else he has done for people/community/the world