1. touch the right chord : 触动情绪, 扣人心弦；
1. 和弦;和音
A chord is a number of musical notes played or sung at the same time with a pleasing effect.
2. 激起共鸣;触动心弦
If something strikes a chord with you, it makes you feel sympathy or enthusiasm.
1. a combination of three or more notes that blend harmoniously when sounded together
2. a straight line connecting two points on a curve