Gamelan outside Indonesia called "Gamelan Penempaan Guntur" (Gamelan Forge of Thunders). The group offers regular concerts at the museum and other venues, including international festivals. The first gamelan in Mexico is that owned by the Indonesian Embassy in Mexico City since the 1990s. It is a bronce Javanese slendro gamelan, but it started to be used and became active since young Mexican music students were convened by Fitra Ismu Kusumo, an Indonesian student in Mexico, and began using and playing this gamelan in 2002 and founded the group Indra Swara. Currently in Mexico there are at least four sets of gamelan: a Surakartan
Gamelan Sekaten are "Kyai Guntur Madu" and "Kyai Guntur Sari". According to Benjamin Brinner, the "gamelan sekaten", exists in halves: divided between the two rival courts in Surakarta and Yogyakorta, each court had a matching second half made. The pitches of the "Sekaten" ensemble is in "pelog", but lower than standard ensembles today. According to Benjamin Brinner it is the lowest pitched, largest, and loudest ensemble in Java. In recent times the gamelan at ISI Surakarta commissioned a special "Sekaten" set that would be compatible with their other gamelan, to be used in new experimental compositions. Historically, the "Sekaten" ensemble is notable