Re: m7.5- transposed to sus#4 b3 ??

[Thomas Morley]

Am Mo., 11. Nov. 2019 um 21:38 Uhr schrieb Sandro Santilli <address@hidden>:
>
> I transcribed an A major song with this chords snippet:
>
>   ees:m7.5- | aes:7 | aes:m7.5- | des:7 |
>
> When transposing it to Eb major it is rendered as:
>
>   Bbbø | Ebb7 | Ebb7sus#4 b3 | Abb7
>
> I don't understand why the third chord (m7.5-)
> gets rendered as a "7sus#4 b3" chord, very hard
> to read ...
>
> Ideally I'd also like to avoid the double flats,
> but what strikes me is the "sus#4 b3" part, is it
> a bug ? I'm using GNU LilyPond 2.18.2 and the
> .ly file has a \version "2.18.2" header.
>
> --strk;
>

If you transpose the note eeses down an augmented 4th the note beseses results.

If you let the chords display in \new Staff you get a warning:
2.18.2:
warning: Transposing eeses'' by ges makes alteration larger than double
2.19.83:
warning: Could not find glyph-name for alteration -3/2

2.18.2 uses aes instead of beseses, thus the strange chord-name.

To circumvent, you could do \transpose a dis instead.


Though, tbh I doubt chords based on ees, aes, des _in_ a-major are
correct at all.
Probably some modulation/key-change before? Or copy from a weird source?

Cheers,
  Harm