These mantras are typically for a longer period and sung in teams. Kirtan permits a communal expression of devotion which is an uplifting exercise that can cause states of joy and bliss. Well known kirtan mantras involve the Hare Krishna mantra. Baṭuka Bhairava is the youthful type of Kāla Bhairava, https://www.facebook.com/share/1J6iVuTuXb/