Defying definition, psychedelic rock exists across a mind-bending spectrum of sound and interpretation. Born from the reconciliation of volume, effects, reverb, and joy, psych rock married post war optimism with misfit counterculture. Their children, a strange brew of electrified folk and barroom boogie-woogie, spawned countless manifestations. Each artist, each era, each scene added its innovation to stretch the genre. Hawkwind…