figured bass with multiple extender lines

[lemzwerg]

I ask for help in finding out how to correctly encode multiple extender lines. My example is measure 45 from the first movement of Mozart's Requiem. The NMA shows this:

With LilyPond I can encode it as follows.

<<
  \relative c {
    \omit Staff.Clef
    \omit Staff.TimeSignature
    \stemDown
    \clef "bass"
    gis8 gis' gis gis gis gis gis gis
  }
  \figures {
    \bassFigureExtendersOn
    <7 3!>8 q q q q q <6 3!>8 <5 3!>
  }
>>

Here is the forthcoming test file 74b-FiguredBass-Extenders.xml. Finale doesn't seem to support figured bass at all; however, MuseScore 4.7.0-260430050 does, and renders it as follows.

My questions.

• Is the test file sound MusicXML code?
• Can someone please try with other notation programs to get a result that looks close to what LilyPond and the NMA shows? I would like to see both the exported MusicXML and how importing the above MusicXML test file gets rendered so that I can do a comparison of the XML code.

[infojunkie]

Hi @adamcho14 we met at MEC 2026 and I hinted I'd invite you to help out on figured bass issues in MusicXML... Here's one if you want to take a look.