On Fri, Nov 17, 2017 at 1:32 PM, David L. Craig <dlc.usa@gmail.com> wrote:
 
> Werner Scheer was the original author of both Muse and MuseScore.
> Also, not everyone thinks the UI of MuseScore is unintuitive (I haven't
> used it though).

They may be old, but they're not abandoned:

https://github.com/muse-sequencer/muse
https://github.com/musescore/MuseScore

MuseScore is definitely not abandoned, version 2.1 came out last May. I use it nearly every day, the interface is much more intuitive than, say, Finale, by a long shot. 

--
Brett W. McCoy -- https://soundcloud.com/brett-mccoy
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"In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world."
    -- Jelaleddin Rumi