Not recognise Dominant chord

[etamity]

I think the isNote function need to update , as it can't recognise C7, Edim chords.

I would suggest any note start with lower case letter to recognise as Note
and take full chord mapping from tonal library.

[walmik]

Hi @etamity We have a similar issue for C5, C13 etc. In Scribbletune we map these chords with the th suffix. Please note the comments here https://github.com/scribbletune/scribbletune/blob/master/src/chord.ts#L31-L32

One other thing to note is, Scribbletune even returns these chord names with the th suffix in the chords method https://github.com/scribbletune/scribbletune/blob/master/src/chord.ts#L61-L62

For Edim, that s a great observation! The diminished chord is denoted by o from tonal and Scribbletune carries the same convention forward. To use Edim please try Eo - that s the lower case letter o - not zero ;)

[etamity]

Hi @walmik ,
Thank you, that helps!
Somehow I still feel like C5, C7 , Cdim are standard chord name in the music industry , it will be great to align with the standards.
If we can take all lower case letter as note, the problem will be resolved. like:

c1,c2,c3 ...

Just a suggestion, and well done for this great work!