Many methods of playing the bowls have developed in Nepal. The book focuses on the Swoyambhu method, which uses three bells and shamanic beating of the bowl. It was named after Shreekrishna Shahi, who lives in Swoyambhu, and is now popularised by his nephew Aman Shahi in Thailand. “I use this method for many kinds of sound healing,” says Shahi. “Immersion in this sound has been known to cure ailments like insomnia, migraine, etc.”