Lies - the knickerbockers

That sounds more like a ripoff of early Beatles to me (which is not necessarily a bad thing). I'd throw in:

Lemon Pipers, "Green Tambourine"
Yes, "Beyond and Before"
Rolling Stones, "She's a Rainbow", "Ruby Tuesday"

ORIGINAL: John

Iron Butterfly In A Gadda Da Vida psychedelic

Jimi Hendrixc Experience the album Are You Experience psychedelic Probably the definitive album of psychedelic rock.

Crosby, Stills & Nash The album progressive

I always look at the progressive rock movement as coming out of the the psychedelic rock movement.

And in fact, John, many of the other authorities on prog say exactly the same thing.

A definition of Progressive Rock Music

Progressive rock (often shortened to prog or prog rock) is a form of rock music that evolved in the late 1960s and early 1970s as part of a "mostly British attempt to elevate rock music to new levels of artistic credibility." The term "art rock" is often used interchangeably with "progressive rock", but while there are crossovers between the two genres, they are not identical.

Progressive rock bands pushed "rock's technical and compositional boundaries" by going beyond the standard rock or popular verse-chorus-based song structures. Additionally, the arrangements often incorporated elements drawn from classical, jazz, and world music. Instrumentals were common, while songs with lyrics were sometimes conceptual, abstract, or based in fantasy. Progressive rock bands sometimes used "concept albums that made unified statements, usually telling an epic story or tackling a grand overarching theme."

Progressive rock developed from late 1960s psychedelic rock, as part of a wide-ranging tendency in rock music of this era to draw inspiration from ever more diverse influences. The term was applied to the music of bands such as King Crimson, Yes, Genesis, Pink Floyd, Jethro Tull, Soft Machine and Emerson, Lake and Palmer. Progressive rock came into most widespread use around the mid-1970s. While progressive rock reached the peak of its popularity in the 1970s and early 1980s, neo-progressive bands have continued playing for faithful audiences in the subsequent decades.