So we're going to hear a solo by Louis Armstrong now and let's count along once the phrase begins. I'll get you started and then you count the measures. Here we go.

下面我们听一段路易斯·阿姆斯特的独奏,同时音乐起奏时,我们就开始数,我会提示你们开始,然后你们开始数小节,准备好

耶鲁公开课 - 聆听音乐课程节选