Mapping the territory between psychedelics and rhythmic activity (music, group dance, synchronized breath) as overlapping pathways into the same therapeutic neuro-social state. Working hypotheses span (1) rhythmic synchrony as a communitas amplifier in group sessions, (2) neural entrainment as a substrate for music-induced peak experiences under psychedelics, (3) dance + motor entrainment as a non-pharmacological pathway into the psychedelic brain-state space. Looking for collaborators, critics, and pointers to literature we have missed.