(VOICE) In June,Harper taught his last class in instrumental music in the school district of Yonkers, a suburb north of New York City.

VOA: standard.2010.08.11

Well, yes, with opera of course, but the other eighty percent is purely instrumental music.

没错,歌剧中是有歌词的,但其他百分之八十的古典乐都是纯器乐

耶鲁公开课 - 聆听音乐课程节选

Well, yes, with opera of course, but the other eighty percent is purely instrumental music.

没错,歌剧中是有歌词的,但其他百分之八十的古典乐都是纯器乐

耶鲁公开课 - 聆听音乐课程节选