Have you heard of the Gateway Tapes? Created by Robert Monroe and still offered by the Monroe institute today, The Gateway Tapes focus on Hemi Sync, Higher frequencies and Astral Projection and Remote Viewing.
Listen on Internet Archive: https://archive.org/details/gateway-experience-wave-1-track-1-orientation-the-gateway-tapes-no-ads
Listen on Spotify: https://open.spotify.com/album/4k65UmctH8zJYE3Q05Csxr
Read the CIA Document: https://www.cia.gov/readingroom/docs/cia-rdp96-00788r001700210016-5.pdf
