“Chant forth the sweet name of Hari (God), keeping time all the while by clapping your hands, then you will acquire mental concentration. If you clap your hands, sitting under a tree, the birds on the boughs thereof will fly away in all directions, and when you chant forth the name of Hari and clap your hands, all evil thoughts will fly away from your mind.” Sri Ramakrishna, The Sayings 308.