Pretty cool but somewhat typical pychedelic rock album out of 1960's LA scene. Has a bit Rolling Stones, Byrds, Love, and Beatles mixed in together (and they claim they were heavily influenced by the Bee Gees too). If I had to think of an album that is similar to "...Euphoria" it would be "The Notorious Byrd Brothers"('69) because of it's eclectic nature and over-emphasis of studio effects.
What this album signifies to me most is not that it's a lost/ignored masterpiece but what could have been if these guys kept at it and had more support. There are some fairly strong songs here, the most obvious being Did You Get The Letter, but just about all of them have some good points to them. The liner notes seem to have a bloated sense of importance- which is typical of many artists/reviewers that haven't moved on from their heyday.
All critism aside, this is an interesting time piece. It's got bluegrass, country, baroque pop, and pyschedelic rock. They knew how to make a decent groove, and the harmonies were pretty cool- decent song writing too.