Vai - Sex & Religion Sex & Religion is a Steve Vai album presented under the name of simply "Vai" and before then "Light Without Heat" but had to be changed due to copyright issues to the original name. It features Strapping Young Lad and The Devin Townsend Band vocalist and guitarist Devin Townsend on vocals before he started either one of his own bands. Townsend also co-wrote the track "Pig", as well as "Just Cartilage" which was left off the final album.