Vani Devi chants the kirtan Chidananda, which is also called Sunaja Krishna Kirtan - a kirtan by Swami Sivananda, a Sivananda Kirtan. Then you can listen a second kirtan: Serve Love Give Purify Meditate Realize, also a kirtan written by Swami Sivananda.
Chidananda is the number 402 in the Yoga Vidya Kirtan Songbook. Serve Love Give Purify Meditate Realize can be found in the Kirtan Songbook as number 53.
This recording was not recorded during a Yoga Vidya Satsang at Yoga Vidya in Bad Meinberg, Germany. It was taken separately. Bliss and joy by listening and sing along these both kirtans.