Last saw them as a bunch of spotty kids, supporting Sammy Hagar...
That song, followed by Switch 625, played at as loud a volume as your system (or neighbours... naw, sod the neighbours...) can tolerate...
Saw Phil Coleen a few time with Girl... took a good set of pics of them at the Marquee, way backs...
Saw Def a number of times during NWOBHM (bought the 2nd issue of the 1st single, and the 1st Maiden single - same year IIRC) but never bothered to see them once they "made it"... stopped getting there stuff around "Photograph" era...