Jazz lead template in Musescore

ChatGpt answer to my comment and question:

Hi everyone,
I was involved in a study through a video on how chords and melody (unison notes) complement each other. In the video, an image of a lead sheet for the song "I Can See Clearly" was displayed.

I'm attaching the PDF and MIDI files that I created using MuseScore 4, based on what I saw in the video.

In the video, the teacher explained that to create a good harmonization of the song, inversions of the chord "F" are used.

So, looking at the image of the lead sheet, I built my own version with the chords and melody. In MuseScore, I selected the Jazz Lead Sheet template and entered the chords in 4/4 tempo:
F, Bb, and F on the first line.

In the video, the teacher mentioned using two inversions of the F chord (F-A-C):

Fmaj/A (A-C-F)

Fmaj/C (C-F-A)

I was happily surprised that after entering all the chords and notes and exporting to MIDI, MuseScore played the correct inversions—even when I only entered the letter "F" for the chord.

Can someone explain how this "magic" is happening?

ChatGPT responded:
It sounds like you're exploring some great concepts in music theory and notation software—well done for diving into harmonization and chord inversions! Here's a breakdown of what’s happening in MuseScore that might explain the “magic” you're seeing:

Why MuseScore plays chord inversions even when you just type "F":
When you enter the chord name "F" in MuseScore, you’re not defining the exact voicing or inversion of the chord—you're just specifying the chord symbol (which is abstract). MuseScore has an internal playback engine that automatically assigns voicings and rhythms for playback purposes, often choosing musically pleasing or "jazz-appropriate" voicings depending on the template you've selected.

Since you mentioned that you used the Jazz Lead Sheet template, MuseScore likely uses jazz-style voicing rules behind the scenes. This includes:

Spreading out chord tones across octaves

Using common jazz inversions and voice leading

Automatically interpreting how to play chords musically even when you only specify the root chord symbol

So, when you typed "F", MuseScore's playback may have opted to use:
F/A (1st inversion) or
F/C (2nd inversion)
...because those inversions create smoother bass movement or better voice leading in the context of your melody.

This isn’t a bug or magic—just MuseScore trying to sound good using built-in harmonic rules.

TL;DR – How the magic happens:
MuseScore uses internal logic (based on jazz voicings) to interpret your simple chord symbol "F".
It automatically picks inversions (like F/A or F/C) to make the progression smoother and more musical.
You didn't need to explicitly write the inversion because MuseScore handles that dynamically for playback.
If you'd like to control exactly which inversions get played, you can:
Manually enter the chord voicings as notes in a separate staff
Specify bass notes using slash chords (e.g., F/A or F/C)
Or edit the playback using MuseScore’s Mixer or Piano Roll Editor
Let me know if you want help with any of that!