Narendra sings and guides the mantra Om Purnamadah Purnamidam during a satsang. You can find this kirtan as part of the prayer for peace in the Yoga Vidya kirtan songbook as No. 801: Om Pūrnamadah Pūrnamidam Pūrnāt Pūrnamudachyate Pūrnasya Pūrnamādāya Pūrnamevā Vashishyate. - Om Shanti