Edinburgh Rathayatra, UK - 21st August 2017 (Album with photos)
Srila Prabhupada: Chanting involves the activities of the upper and lower lips as well as the tongue. All three must be engaged in chanting the Hare Krishna maha-mantra. The words “Hare Krishna” should be very distinctly pronounced and heard. (Sri Caitanya-caritamrta, Adi-lila, 17.3 Purport)
Find them here: https://goo.gl/XBLxsg