Terra Firma is a name used by at least three groups. The earliest being an Australian hip hop group from Adelaide and part of the Certified Wise Crew. Also a Swedish stoner/doom metal band, now disbanded. Also a U.K. hip hop outfit. 1. Terra Firma (Sweden) The band Terra Firma was formed in 1995 by Fredrik Lindgren (Unleashed) and Christian Lindersson (Count Raven, Saint Vitus) to serve as a side-project from their bands at that time.They released two records before the band split up, Terra Firma 1999 and Harms Way 2000.