Bill Xtillidiex Muir

Bill Muir is an English language vocalist, notable in the Final Fantasy community for performing the vocals of Final Fantasy X's opening theme song "Otherworld". Bill Muir was the frontman of xtillidiex ("Till I Die"), a straight edge hardcore punk band that toured Japan from 1998 to 2002 in an attempt at popularizing the straight edge subculture. The last demo the band recorded, after much in-fighting and a later break-up, reached Square Enix by chance and Muir was hired to perform the heavy metal opening theme song of Final Fantasy X.