There are several bands known as Piledriver. Band One: Canadian speed/thrash metal band. Band Two: Japanese Hardcore Punk band in existence from 1987 and still around today Band Three: An industrial metal act from Oslo, Norway who released 3 albums between 1995 and 2002, as well as several tracks on various compilations. Piledriver dubbed their form of industrial metal "dunderdisco" (thundering disco), and combined harsh hardcore guitar with simple drum machine beats, strange synthesized melodies and angry vocals.