Preaching program in Sudamerica Tour 2016 (Album with photos)
Srila Prabhupada: If one wants success in practical yoga practice, it is advised that he take to the chanting of Hare Krishna and he will actually feel himself making progress. In Bhagavad-gita this practice of Krishna consciousness is prescribed as raja-vidya, or the king of all erudition. (Srimad-Bhagavatam, 3.15.45 Purport)
Find them here: https://goo.gl/ZU0qFQ