Scary Voices: The 13 Creepiest, Most Blood-Curdling Singers in Rock - Spinner
For those too lazy to click the link:
13. Lux Interior of The Cramps
12. Bjork
11. Screamin' Jay Hawkins
10. Ian Curtis
9. Julee Cruise
8. Peter Murphy of Bauhaus
7. Jello Biafra of Dead Kennedys
6. Tom Araya of Slayer
5. Black Francis of Pixies
4. Nick Cave
3. Diamanda Galas
2. Tom Waits
1. Howlin Wolf