试著厘清电视这一媒体所决定的主题、技巧手法和结构特点。

Try to identify themes, techniques and structural features that have been shaped by the TV medium.

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One of them is the technique you saw me do with my left hand where I wiggled it a little bit. It's called vibrato.

其中有个技巧,你们看我左手的手法,我略微揉动琴弦引发出颤音

耶鲁公开课 - 聆听音乐课程节选