From a fresh look at this space, https://abcnotation.com/ came up looking like a sweet spot among the tradeoffs involved, with fairly mature tooling and perhaps even decent collections of content online (mainly folksy stuff it would seem).

As mentioned.

I tried adding spaces to align, but it didn't seem to make much of a difference

HTML collapses adjoining whitespace characters to a single space. (That linefeeds appear to do something is a wordpress thing: it converts them to br and p tags, for single and double linefeeds respectively.) One way to turn this off is with a pre tag ("preformatted text"), which also sets a fixed-width font.

Re footnote 5, my first CL project was to try to make an ascii notation for music. http://ztkfg.com/2018/11/apollo-music-project/ If I ever find time I want to add a feature where you can run apollo's notation through a function and get back a traditional score in an svg format.

Cool!

It may be easier for you to read the notation you wrote if you align the tablature by putting a space before positive numbers so that they have the same 2char with of the negative numbers.

I tried adding spaces to align, but it didn't seem to make much of a difference when I previewed the draft. For my own use I write on a piece of paper that I carry in the case for more convenient access.

Also, what does 5-- mean at the end of C and E?

That 5 blow is actually supposed to be the first note in D and F. With that in mind, B, D and F are the same pattern. It's placed at the end of C and E with 5-- to denote there should be minimal pause transitioning from C to D and E to F. He explains the move in the video, but you'll see in my version I've not yet mastered it.

@Jacob Welsh

Thanks for the links.

Robinson, why not learn the holes by note names (letters) rather than the instrument-specific numbers? It's not like there's that many!

Good point. There's not that many, but I had enough to deal with to start to get the coordination and the pattern down. It had not occurred to me, but now I don't have a reason not to, especially given I was refresher I received at Junto last month. harmonicatunes.com pays.

And you see lines A, B, D and F here are supposed to be almost identical? I seem to hear more high notes leaking in starting with B, hard to tell though with all the leaks otherwise. (I know getting single notes is harder than chords on harmonica.)

The difference between A and the others is A ends with E (5 blow), D (4 draw), D (4 draw) while the others end with D (4 draw), C (4 blow), C (4 blow). Thanks for pointing out the leaks, I'll work on the plug.

My own attempt at an ascii-to-soundwaves system at age 17 might be amusing: under "Toys" at http://welshcomputing.com/code/ .

Robinson, why not learn the holes by note names (letters) rather than the instrument-specific numbers? It's not like there's that many!

And you see lines A, B, D and F here are supposed to be almost identical? I seem to hear more high notes leaking in starting with B, hard to tell though with all the leaks otherwise. (I know getting single notes is harder than chords on harmonica.)

Re footnote 5, my first CL project was to try to make an ascii notation for music. http://ztkfg.com/2018/11/apollo-music-project/ If I ever find time I want to add a feature where you can run apollo's notation through a function and get back a traditional score in an svg format.

It may be easier for you to read the notation you wrote if you align the tablature by putting a space before positive numbers so that they have the same 2char with of the negative numbers.

Also, what does 5-- mean at the end of C and E?