By just knowing three chords, the I, IV and V7, you can play thousands of songs.

只要知道三个和弦：i, IV和V7，你就可以弹奏成千上万的歌曲。

youdao

Reinhardt played guitar chords with just two or three fingers.

VOA: standard.2009.12.19

Here's a group of sounds, different pitches and actually three different pitches in there, as opposed to just one pitch--one pitch, three pitches or three or four pitches, moving in different ways, kind of independent rhythmic chords, so that's the difference between monophonic, homophonic and polyphonic texture.

这是一组音,不同的音高,事实上三个不同的音高,相对于一个音高,一个音高,三个音高或四个音高,以不同方式运动,像有独立节奏的和弦,这就是单音,主音和复音织体的区别

耶鲁公开课 - 聆听音乐课程节选

Where most country songs have three chords, Mr Nelson's often have four or five.

ECONOMIST: Country music

Mr. KING: He showed me three chords.

NPR: Building a Museum for B.B. King

Three chords centering the entire thing.

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