reflex

Install command: 
brew install --cask reflex

Name: Reflex

Media key forwarder for Music (iTunes) and Spotify

https://stuntsoftware.com/reflex/

Cask JSON API: /api/cask/reflex.json

Cask code: reflex.rb on GitHub

Current version: 1.2

Current version requires: macOS >= 10.13

reflex is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
reflex 12
Installs (90 days)
reflex 38
Installs (365 days)
reflex 194
Fork me on GitHub