Timpani or as it's sometimes called a kettledrum, and it was playing two different pitches, actually sort of playing this pitch and this pitch, the octave and then the fifth.

定音鼓，或者有时称作半球形铜鼓，它正演奏两个不同的音高，实际上在演奏这个音高和另外一个音高，八度音阶和这个五度。

youdao

Timpani or as it's sometimes called a kettledrum, and it was playing two different pitches, actually sort of playing this pitch and this pitch, the octave and then the fifth.

定音鼓，或者有时称作半球形铜鼓，它正演奏两个不同的音高，实际上在演奏这个音高和另外一个音高，八度音阶和这个五度。

youdao