LP reissue: 2004 Amber Soundroom
CD reissue: 2007 Garden of Delights
P2O5 is a chemical compound (and band name is stylized as such) called Phosphorus Pentoxide, which according to Wikipedia means: "a potent dehydrating agent as indicated by the exothermic nature of its hydrolysis". Well, then... isn't that edifying? In effect, it has no practical meaning, which is what the band were striving for - a practical meaning. So they were dumbo chemistry students... and dumbo musicians as well. What we have here is bonehead hard rock with organ. It just happens to be I like bonehead hard rock with organ... so there's that.
A very rare album in original form, the usually great Garden of Delights CD should suffice for most folks, and their LP partner at the time Amber Soundroom fulfills the vinyl requirement.