Kaalabhairava Ashtakam is a lovely Sanskrit hymn, composed by Adi Shankara. It comprises 8 stanzas; that are normal of any Ashtakam. The hymn depicts the features of Kaala Bhairava of Kashi, the God of Death. This Bhairava is referred to as currently being black; without the need of clothing; https://www.youtube.com/watch?v=S2iLMNuDYc0