One who has not listened to the messages about the prowess and marvelous acts of the Personality of Godhead and has not sung or chanted loudly the worthy songs about the Lord is to be considered to possess earholes like the holes of snakes and a tongue like the tongue of a frog.
Through the popularizing of hari-kirtana, or the sankirtana movement, the brahminical culture and ksatriya government will automatically come back, and people will be extremely happy.
Purport on Srimad Bhagavatam 7.2.11
Those who are actually advanced in knowledge are able to appreciate the essential value of this age of Kali. Such enlightened persons worship Kali-yuga because in this fallen age all perfection of life can easily be achieved by the performance of sankirtana, the congregational chanting of the Lord's holy names.
With one-pointed attention, one should constantly hear about, glorify, remember and worship the Personality of Godhead, who is the protector of the devotees.