First, make a list of your top 20 artists overall. Then, for each of these artists, add the 8 most similar artists to your list. Delete any duplicates, count up the number of entries on your list and this will give you some idea of how eclectic your listening habits are. A score of 9 represents an extremely unvaried musical taste while a 160 represents an extremely varied one.
1. Slipknot
Stone Sour
Murderdolls
Korn
Mudvayne
System of a Down
Bullet For My Valentine
Roadrunner United
Dope
8/8
2. The National
Wolf Parade
Arcade Fire
Interpol
Band of Horses
The…