This book is the first commentary in Western literature on the Mgur 'bum, or Collected Songs of Spiritual Realization, of the great Tibetan scholar and siddha, Skal ldan rgya mtsho (1607-1677). Dr. Sujata provides the original Tibetan verses alongside her translations throughout her commentary. A unique CD is included that contains the author's recordings of Skal ldan rgya mtsho's songs as they are sung today in the vicinity of his favorite hermitage.