We have three angklung sets at Mekar Bhuana, but only one of them has casings at the moment. They are all old, ranging from an estimated 60 years through to 200 years old. The set which is currently active has original antique casings and seems to have been carved by different individuals of one community, which is typical of the era before mass production of gamelan instruments in the 20th century. This set was re-tuned by Vaughan Hatch and augmented with a number of additional instruments to make it into a Karangsem style formation, which some bamboo instruments that were documented by Colin McPhee in the 1930s, including bamboo rattles called angklung kocok, cungklik, gerantang and terompong beruk.
We are the only place outside of East Bali where this type of angklung formation is found, and our angklung kocok are particularly unique as they have four rattles as opposed to the more common three.
Here is a video of our family angklung group practicing at our regular Sunday morning rehearsal: