This piece is an electro-acoustic composition that was inspired by an experience traveling around Indochina peninsula. The electronic sounds express cultural differences and similar customs affect each others in histories. The main parameter of this piece is a evolution of 'duration'. The Gung-pyun of a Dong-hae-an-byul-shin-gut Janggu (Korean Traditional Instrument) has a long envelope for its shape relatively to other Janggu. The various sounds from this instrument suggests attractive musical ideas and potentials beside of traditional percussive sounds.