Dub Element's Dub Techno YT playlist can always pull me back to a relaxed but also alert state for working with text (e.g. litrev or writing). For higher BPM his Deep Progressive Techno playlist is ace. https://www.youtube.com/@DubElementMusic/playlists
The best thing that stills my mind is concentrating on work (which could be linked to Csíkszentmihályi's flow state) or doing meditation. There are many different states of mind meditation can help induce and maintain. I think the basic categorisation splits meditation into two types: (a) concentrative/active and (b) receptive/passive. The fastest and most efficient technique I found is the Wim Hof breathing technique: https://youtu.be/tybOi4hjZFQ
Regarding music and the mind, the synchronisation/entrainment method of audio driving/sonic driving has been addressed in the book 'Music, Science and the Rhythmic Mind' by Berger and Turow. Research that looks at aligning not just the rate (tempo) of the music to brainwaves, but varieties of rhythm has been done by Jeff Strong, founder of Rhythmic Entrainment Intervention (some of his YouTube videos talk about specifics). Jeff has studies Vodou music AFAIK.
Regarding altering states of mind through meditation, Jeff Tarrent's NeuroMeditation Institute has some interesting work and regarding altering states with psychedelics, the work of Andrew Gallimore's (Alien Insect's) work is also very interesting. Andrew in his YouTube video series talks about how connections in the brain change when exposed to psychedelics - I would be interested to see correlation between the way 'trance' music (without drugs) and 'psychedelics' (drugs:) create these states.
