This beautiful, 30-minute pure tone alpha brain wave meditation takes you from the upper alpha range, starting at 12 Hz, and progresses down to 8 Hz for a profound meditation experience. Listen & Subscribe to the Meditation Life Skills Podcast on Spotify or Apple Podcasts. Alpha brain waves are one of the five primary types of brain waves, characterized by a frequency range of 8–12 Hz. They tend to occur most when you’re awake, relaxed, and alert, but they’re different from the high-freq...