Q. Can you explain me the significance of the mahamantra? Is it more effective than devotional songs and Vedas?
A. The sixteen syllable Hare Krishna mahamantra is a plea to the internal potency (Hare) of the Supreme Personality of Godhead (Krishna, Rama) – namely to Srimati Radharani, to be engaged in the service of Krishna. The Upanisads mention this mahamantra as the means of perfection especially in this age of Kali.
Singing devotional songs or chanting Vedic hymns are also forms of devotional service. However, the mahamantra has been empowered by Caitanya Mahaprabhu, who is non-different from Sri Krishna and is the yuga avatar and is therefore considered to be most potent.