Take your top 20 artists. For each of these artists, collect the top 5 similar artists. The resulting number of unique artists is your eclectic score. If the score is small (extreme = 5) your musical preferences are very limited, and if it is large (larger than 80, extreme = 100), then you have an eclectic musical preference. You can compute your own score at http://anthony.liekens.net/pub/scripts/last.fm/eclectic.php
My eclectic score is currently
95/100
The 95 related artists for my profile are A Silver Mt. Zion, After Forever, Air, Amiina, Andrew Bird, Anti-Flag, Apostle of Hustle, Architecture in Helsinki, Arctic Monkeys,…