This playlist offered by Kaivalya Yoga Gurukulam (KYG) is called Ram Naam Pranayama. It is a practice or Sadhana where you harmonize your breathing, namely inhalations and exhalations, with the divine mantra RAM. This is a simple and safe practice. However, please consult your physician before embarking on this or any other yoga routines prescribed by Kaivalya Yoga Gurukulam.
The first track introduces this practice.
The second track is a guided practice to help you learn to synchronize your breathing with the melodic chant 
The third, fourth and fifth tracks are Sadhana or practice tracks, where you could practice this pranayama for 16, 24 or 48 minutes.

Ram Naam Pranayama

Welcome to a wonderful Pranayama Sadhana (practice). In this practice the pranayama is combined with Ram Japa (repetition of mantra). 
Ram Naam Pranayama is where you harmonize your breathing, namely inhalations and exhalations, with the divine mantra RAM. This is a simple and safe practice. The ratio of inhalations to exhalations is 1:2 as prescribed in the yoga scriptures. In this Ram Nam Pranayama practice you synchronize your breathing to the rhythm of the musical chant,  inhaling for 4 beats and exhaling for 8 beats. 
Follow the initial guided practice in this playlist, to learn harmonizing your breath with the rhythm of the divine mantra.