"Sigma" can refer to; 1. A United Kingdom-based drum and bass collective 2. An Arizona, USA based punk-rock band 3. One of the many pseudonyms of Canadian electronic artist Renard. 4. A Psy-Trance artist from Ramat-Gan, Israel 5. A boy group from Taiwan (SIGMA乐团). --- 1. Sigma is an up and coming drum and bass collective based in the UK, rapidly gaining a reputation for their eclectic style of dance floor beats. Producer of the most downloaded song on drum and bass arena (www.breakbeat.co.uk) All Blue Read more about Sigma on Last.fm.