Harinama by ISKCON São Paulo devotees (Album with photos)
Srila Prabhupada: It is essential that one constantly associate with pure devotees who are engaged morning and evening in chanting the Hare Krishna mantra. In this way one will get the chance to purify his heart and develop ecstatic pure love for Krishna. (Nectar of Devotion, 17)
See them here: https://goo.gl/Svg7K9