Jegog is a form of gamelan music indigenous to Bali, Indonesia, played on instruments made of bamboo. The tradition of jegog is centered in Jembrana, a region in Western Bali. In recent years jegog has started to become popular in other regions of Bali with a few groups being established in central Bali to entertain tourists. International interest has been spread by tourists visiting Bali and by recordings. There are virtually no ensembles outside of Bali with the exception of at least two groups in Japan (Sekar Sakura and Geinoh Yamashirogumi, the latter's having been used in 4 of the tracks in their score for the film Akira as well as on the final track of Ecophony Rinne ), one in the United States (Sekar Jaya)[1] and one in Germany. Jegog music is very fast, loud, rhythmic and precise. Pieces last from a few minutes to as long as thirty minutes.