Why does a trumpet--If I asked a trumpet to play this pitch, a trumpet played, and then I asked an oboe to play it, the sound would be very different.

小号为什么...,如果我用小号演奏这个音高,小号演奏后,我又让双簧管来演奏,声音会很不一样

耶鲁公开课 - 聆听音乐课程节选