The book is about nine Indians (one in present-day Pakistan) and their tryst with religion and spirituality. For the launch of the book in India some of the characters in the book performed for the audience, with one of character’s Hari Das from Kerala leading the Theyyam troupe and Paban Das Baul from Bengal leading the Baul singers.
Source: Nine Lives on Wikipedia
Nine Lives was written by William Dalrymple. It was published in 2009.