I have Music Maker 2023 Premium. In any project, when I use the in-app piano roll, with no external midi objects or anything, it will not make a sound when I press the key. The record button works with the piano roll, it just dosen't make any sounds untill I press the playback button. I updated the app with the new patch, fixed a few of my bugs I planned to report here, but not the piano roll one.