Your description of progress in kirtana performance with Gurudasa playing sitar and Mukunda playing khole is encouraging. Practically we see that as we sincerely try to improve our chanting for the pleasure of Krishna, Krishna reciprocates and we feel our greatest pleasure which is devotional service to the Lord. So, you may continue with this method, it is very nice and approved by me.
Letter to Syamasundara, 24 November, 1968