Sonic.
The record player, from its own GitHub releases. Add this repository to F-Droid, Droid-ify or Neo Store once, and Sonic updates like any other app there. It's the same APK as on GitHub, so the two update each other.
Or add it by hand:
https://somchandra17.github.io/sonic-fdroid/repo
Fingerprint: C482BF3B0848C66DD63E0194711A3DC800487D908D6008A66A124B7E16A91E6B