Gamelan is a traditional Javanese orchestra comprised of various instruments including drums, glockenspiels, kettles, bars, and flutes. The instruments are divided into two tunings called slendro and pelog that are comparable to minor and major keys in Western music. A complete gamelan orchestra contains different sized drums, glockenspiels, double row kettles, thin bronze bars, wooden bars, gongs, small gongs, string instruments, and a flute from each slendro and pelog set.