F7/F8/F9 buttons not working for Apple Music

I recently installed Spotify, and it changed the defaults for F7/F8/F9 (back, pause/play and skip) to Spotify. I want to change it back to Apple Music. I uninstalled Spotify, rebooted my computer, and unchecked "Use F1, F2, etc. keys as standard function keys" under "System Settings" -> Function Keys. Can anyone assist?