Ping Jian Sheng, director of the Chinese-owned Yi Fan Trading Company, says he is helping a number of Indonesian leather manufacturers modernize.

VOA: standard.2010.05.13

And every musical culture around the world-- and I've talked with ethnomusicologists about this particular point-- every musical culture around the world, Chinese, Japanese, Indonesian, Indian, African whatever, they all use this phenomenon of octave duplication in their music-- octave duplication in the music.

世界各地的每一种音乐文化,我曾经和一些民族音乐学家谈论过这一点,世界各地的每一种音乐文化,中国的,日本的,印尼的,印度的,或是非洲的,大家都有这种现象,即在自己的音乐里运用,这种重复八度

耶鲁公开课 - 聆听音乐课程节选