Re: mensural ligature

[Phil Holmes]

Willi Apel's book on polyphonic music says (p91) "An ascending tail to 
the left of the initial note makes that note and the following one a S 
each".  So it looks like the original was actually semibreve-semibreve, 
whatever the writer intended.

Phil Holmes
On 20/04/2023 13:38, Johannes Roeßler wrote:

Hi Group,

how can I create this ligature?

it should be Semibreve-Breve

but

\[ a1 h\breve \]

but lilypond states "Semibreve must be followed by another one"

Any idea?

Best regards
Johannes