throughout the early 1980s the ex went through many line-up changes before settling on the core quartet of g.w. sok on vocals, terrie on guitar, luc on bass and kat on drums. in the early 1990s, andy became the band's permanent 2nd guitarist. in 2003 luc left the band after 19 years, to be replaced by double bassist rozemarie heggen. in 2005 heggen in turn left the band and colin (formerly of the dog faced hermans) served as the band's bass player for recordings and tours with ethiopian saxophone legend getatchew mekuria before becoming the ex's sound board operator. guitarists andy moor and terrie hessels have since filled in bass parts by switching off on baritone guitar.