Yes. I understand everything you said.
Am (1, b3, 5)
When I input, I only considered this form of functional display.
So, a better way is to use English letters to display intra chord notes.
For example, when I input a C, there is a layer that displays (C, E, G)
When I input Am, the upper layer of the chord displays (A, C, E)
When inputting a chord, the upper layer displays chord notes, which is very friendly and will help more beginners learn. I don't know if this feature is very difficult to implement. I found that the piano in the MIXER on the right actually displays the keys, but no characters are used to display them.

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