Bach vs. Mozart: The Hidden Science of Emotional Music Preferences

[erronis]

5. I think about jazz and the glissandos and filling the space with between-notes

I'm not a musician but have played a few instruments including harpsichords and early clavichords.

When you're trying to mimic the human voice's ability to span several frequencies in a few moments, I can see using trills and arpeggios to give that impression.

Of course, instruments that don't have precise note placements or can be easily "warped" make it easier(?) for the composer or player.

Exiting from the hall since I don't know of what I spew!