Looking for Notes App for Android & Linux
If you enjoy Orgzly, the updated fork is likely what you want - https://f-droid.org/packages/com.orgzlyrevived/ It has bug fixes, additional features, and is under active development.
Bandcamp... What now?
Take a look at this project started with many of those goals in mind: https://code.communitymedia.network/MountainTownTechnology/aural_isle
Remote community rule
No worries, just use the web interface and two apps. Flip back and forth rapidly until golden.