Bands? Okay, so ignoring the solo singers then:
In a rough order:
1. Poets of the Fall
2. Evans Blue (Not counting anything released after the lead singer got replaced)
3. Yoko Kanno & The Seatbelts (<3 Cowboy Bebop)
4. InMe
5. Nightwish
6. Paramore (...what? They're actually good for generic punk pop rock -_-)
7. Metallica
8. Disturbed
9. Placebo
10. The Cure
Now to make a list including solo artists:
1. Poets of the Fall (most certainly the number 1 out of all music I like ;D)
2. Evans Blue (most certainly the number 2 out of all music I like ;D)
3. Ella Fitzgerald
4. Celldweller
5. Yoko Kanno & The Seatbelts (<3 Cowboy Bebop so very much
)
6. Leonard Cohen
7. InMe
8. Voltaire
9. Melody Gardot
10. Nightwish