These mantras can be used for the mediation. Very peaceful to listen. This app has three tracks. 1. Bhairava Ashtakam. 2. Bhairava Gayathri. 3. Eka Sasti Aksharam. 4. Bairavya Namaha. 5. Om Namashivaya. Kala Bhairava is the fierce manifestation of Lord Shiva associated with annihilation.