There are at least five artists with the name Idiot Savant:

1) An experimental electronic music producer who has released his debut self-titled album 2011

2) A Crust/Grind/Hardcore band from Germany. They exist since summer 2000. They had several releases.
http://www.idiotsavant.de/

3) An Indie Rock Band from the UK
http://www.myspace.com/idiotsavantbanduk

4) A pre-indie band in the US that has evolved into Wishing Wells.
http://www.wishingwellsmusic.com/

5) An electronic music duo from Los Angeles consisting of Ron Levy and Jesse Wright

6) alias for Cai Bojsen-Møller from Denmark. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.