psychedelia is a tricky one, i guess bands like love were classed as psychedelic when they came out, but now they, and a lot of other 60s "psych" bands, don't sound psychedelic to me in comparrison to the music of subsequent bands, but i guess the term was first applied to bands like them, so they must be psychedelic by default, even if i don't hear it.
the earliest (rock or pop) stuff i can think of that still sounds psychedelic to me would be stuff like the white noise, or ash ra tempel, tangerine dream & co. but i'm no psych expert.
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