The Third Karmapa, Rangjung Dorje wrote a commonly recited vajra song or doha expressing his understanding of Mahamudra meditation and the path which leads to it. This spiritual song consists of 25 verses and in this book is a translation of the verses along with a verse-by-verse commentary by Thrangu Rinpoche. If one wants an excellent overview of the profound method of Mahamudra meditation, this book is a very good place to start.