After this post, I'll do a break, and do something else, so you don't get tired of me.
This list is about my 10 favourite groups:

1- Nirvana (really?! this one was difficult ;) )
2- Hole
3- Red Hot Chili Peppers
4- Pearl Jam
5- The Agonist
6- Evanescence
7- Venom
8- Iron Maiden
9- Metallica
10- Midnattsol