Jakarta International Java Jazz Festival (JJF) is one of the largest jazz festivals in the world and arguably the biggest in the Southern Hemisphere, held in Jakarta, Indonesia. The annual jazz festival is held every early March and was designed to be one of the largest jazz festivals globally. It was held for the first time in 2005, when approximately 125 groups and 1,405 artists performed in 146 shows. The first festival was attended by 47,500 visitors during its three-day stretch. The festival, which is also known as Java Jazz, was founded by Indonesian businessman Peter F. Gontha.

https://en.wikipedia.org/wiki/Jakarta_International_Java_Jazz_Festival