How can I control Music with arbitrary global hotkeys (SizzlingKeys replacement) on Catalina? On High Sierra I was able to control the playback of iTunes using arbitrary keys of an external keyboard (one without any Media control keys) using SizzlingKeys.
But SizzlingKeys is a 32-bit app and no longer works on Catalina.
What is the best SizzlingKeys replacement, allowing me to assign arbitrary global keys as hotkeys, allowing me to start/stop playback regardless whether the Music app is in the foreground or not?
Global hotkeys controlling Music even when in the background can be achieved by using a combination of MacMediaForwarder and Karabiner-Elements:

Install MacMediaKeyForwarder: https://github.com/milgra/macmediakeyforwarder/releases
Install Karabiner-Elements: https://karabiner-elements.pqrs.org
Configure Karabiner-Elements using &quot;Simple modifications&quot; so that your desired global hotkey maps onto key_code::play_or_pause (or any other action).

This can also be used to map the global volume control to arbitrary global hotkeys which I find very useful when using an external keyboard. (This does not require MacMediaKeyForwarder.)