yoshihida otomo wanted to create a space to make something different. >> translator: people think it'sot music if it isn't do, re, me, fa, so, la, ti, do and a melody. but if there's sound, there's music. if i do this, it sounds a bit like music, right? ♪ >> reporter: otomo wants the concerts to explore where freedom can lead. there's no musical score. the only rule is that participants must make sounds when the conductor gives the cue. and the conducting duties are passed around. >> translator: consider the word ensemble. music is something you want to create with others, something that's more enjoyable to do with others. the more people, the more fun. and if people are watching and dancing, too, that's even better. music has universal appeal. >> reporter: last month, he went to vietnam to embark on yet another project. otomo got together with people in hanoi to make handmade instruments using bamboo and other household items. when they're finished, they'll put on a concert using the instruments. the concert itself was filled with discoveries. >> reporter: discoveries can include diff