Gamelan ending performances or ceremonies. When an "ending" piece (such as "Udan Mas") is begun, the audience will know that the event is nearly finished and will begin to leave. Certain pieces are also believed to possess magic powers, and can be used to ward off evil spirits. Gamelan is frequently played on the radio. For example, the "Pura Pakualaman" gamelan performs live on the radio every "Minggu Pon" (a day in the 35-day cycle of the Javanese calendar). In major towns, the Radio Republik Indonesia employs professional musicians and actors, and broadcast programs of a wide variety of gamelan music
Gamelan Bali, remarked, "Deviations in what is considered the same scale are so large that one might with reason state that there are as many scales as there are gamelans." This view is contested, however, by some teachers of gamelan, and there have been efforts to combine multiple ensembles and tuning structures into one gamelan to ease transportation at festival time. One such ensemble is gamelan "Manikasanti", which can play the repertoire of many different ensembles. Balinese gamelan instruments are built in pairs that are tuned slightly apart to produce interference beats, ideally at a consistent speed for all pairs of