Listen to The Quiet at the Center of the Spiral - Delta 2.5 Hz online. The Quiet at the Center of the Spiral - Delta 2.5 Hz is an Instrumental language song and is sung by Tera Mangala. The Quiet at the Center of the Spiral - Delta 2.5 Hz, from the album Spiritual & Chakra Meditation - Brainwave Entrainment, was released in the year 2025. The duration of the song is 10:00. Download Instrumental songs online from JioSaavn.