Hi flobruit.

I think tahs would be cool add for this module autogenerate diagrams for difficult chords.
Example:

- we input songs like:

 	A	D
What's the ma	tter with me? I don't have m	uch to say
 	A	B
Da	ylight's sneaking' through the w	indow
 	E
And I'm still in this a	ll night cafe
 	A
Wal	king to and fro beneath the moon
 	D
Out to where the tr	ucks are rolling slow
A E A TURNAROUND 2
Sit out on this bank of sand and watch the river flow

- this shows automatically exactly like is, but if we type:

 	A	[chord:D}
What's the ma	tter with me? I don't have m	uch to say
 	A	B
Da	ylight's sneaking' through the w	indow
 	[chord:E]
And I'm still in this a	ll night cafe
 	A
Wal	king to and fro beneath the moon
 	D
Out to where the tr	ucks are rolling slow
A E A TURNAROUND 2
Sit out on this bank of sand and watch the river flow

then we should be able to see this two chords as "attachment" to content (diagrams below content) for chords D and E

I dont know how implements explanatory for chord to your notations example for chord D --to--> [x,x,0,2,3,2]

What you think?