I added necessary supporting code like Michael (and a voice filled with repeated half notes, so I could hear the tempo) and got it to compile compile correctly with tempo changes (at least alternating fast and slow sections) on Lilypond 2.19.82 Frescobaldi 3.1.3, so I wouldn't think that is the root of your problem.
> 22 mars 2022 kl. 23:21 skrev Mario Bolognani <mario.bologn...@gmail.com>: > > Many thanks Michael for your comments. Unfortunately, due to my reluctance > (and perhaps inability) of using Port and Terminal, I am obliged to use > \version 2.20.2 with Frescobaldi 3.1.3, which maybe are the cause of my midi > problems. > > Anyway, many thanks again for your help > > Mario > > > Mario Bolognani > mario.bologn...@gmail.com > > > >> Il giorno 22 mar 2022, alle ore 22:10, Michael Gerdau <m...@qata.de> ha >> scritto: >> >>> Here is my MWE (structure of lilypond coding regarding part of >>> “Combattimento di Tancredi e Clorinda” by Claudio Monteverdi): >> >> MWE means I can take the code and compile it. And then it shows the problem. >> >> I tried to amend your code as follows: >> I surrounded it with: >> \version "2.23.5" >> >> \include "italiano.ly" >> >> music = { >> [here comes your code] >> } >> >> \score { >> \music >> \layout {} >> \midi {} >> } >> >> That compiles and creates empty music. Now what is the problem? >> >>> When I change \tempo in 3/2 time the speed is more or less the same... >> >> I have no way to test that as your code does not contain *ANY* music >> whatsoever. I already said, when I created a piece on my own what you >> verbally described worked just nicely. >> >> Please provide a WORKING piece of lilypond code that shows the problem. >> That means with EXACT steps as to how the problem can be seen. Claiming "I >> change the tempo and it has no effect" is not helpful. We need to see >> exactly how you change the tempo. Because IMO quite obviously you are doing >> something wrong. I just don't know what. >> >> Kind regards, >> Michael >> -- >> Michael Gerdau email: m...@qata.de >> GPG-keys available on request or at public keyserver > >