The Greek-originated word "holotrop" (which may be translated into "striving for the whole"), was first used by the prominent Czech psychologist Stanislav Grof – the creator of transpersonal psychology and a pioneer of research into therapeutical applications of altered states of consciousness. The breathing method he developed and named holotropic enabled access to altered states of consciousness. The method combines deep and quickened breathing, as well as relaxation and music as supporting elements. It was his concept that inspired the name of the ritualistic psychedelic project of Toni Burner, a musician and sound therapist from Berlin, who draws on Grof's ideas, shamen's knowledge and his own trips, both in the real world and the psychedelic ones, as well as teachings of altered states of consciousness, to try using sounds and music to evoke visions in normal conditions unattainable by the human psyche. Thanks to the unique combination of sounds of electronic and acoustic instruments, Holotrop explores the boundaries between reality and dream, intellect and feelings, ecstasy and meditation.