On Hollow Earth's 'Out Of Atlantis' influences from 1969-1972-era Deep Purple are combined with some distinctly Canterbury styled moves. Obviously this sort of alchemy works, so in fifty years time this may very well be looked back upon as a full-blown progressive rock masterpiece with solid psychedelic underpinnings. Several years in the making, it is easily the most ambitious release from Kommun2 and Sound Effect to date.