Gamelan notation ladder-like vertical staff allowed notation of the balungan by dots and also included important drum strokes. "Kepatihan" is widely used in ethnomusicological studies of the gamelan, sometimes accompanied by transcriptions into Western staff notation with approximate mapping of slendro and pelog tuning systems of gamelan onto the western staff, with and without various symbols for microtones. The relative merits of "kepatihan" and staff notation are sometimes debated, but staff notation is essentially incompatible with the 'end-weighted' nature of melodic structures in Indonesian music. In this respect, "kepatihan" is more suitable, although the usage of overscores (taken from the Galin-Paris-Chevé system)
Gamelan outside Indonesia Bernard then left home and in Amsterdam heard a group of stranded Javanese sailors play a gamelan at the Colonial Museum (later: Museum of the Tropics). He took lessons with them and soon started his own group with friends from his school in Haarlem. In this he received help from Jaap Kunst who taught him to transcribe the then existing 78 rpm recordings and who allowed him to use the beautiful antique Yogyanese gamelan set in the museum. This became Babar Layar, the first serious gamelan group in the Netherlands. Babar Layar played in Yogyakarta style, after Bernard studied one