When the app is not focused or when the screen on the device is turned off (sleep mode), and also when pausing a song, and when switching back from another app, the notes get stuck, playing indefinitely. This is annoying, and should be fixed, as I see it as a bug, or something. It should continue playing the song, even when not focused or screen off (watch and listen only mode), and when in modes other than watch and listen only, the game stops the song and the synth temporarily until the game is switched back to, or the screen turns on. Also, the instruments make this really loud sound when they resume from a suspended note, so this must be fixed.
Game version: 10.5.4792
OS Version: Android 7
Sound problem
When describing problems, always mention your OS and game version (shown at the bottom of the title screen).
If your keyboard has USB or MIDI ports, there is a tremendously high chance (>99%) it will work with Synthesia. See what you'll need on the keyboards page.
If your keyboard has USB or MIDI ports, there is a tremendously high chance (>99%) it will work with Synthesia. See what you'll need on the keyboards page.