When Bungie previewed the audio changes Destiny would receive with update 1.1.2 (released this week), the developer teased a "fun little audio Easter egg" that players could search for.
It took less than a day for Arrekz Gaming to find it. Hidden in the basement of The Tower Hangar, you'll find a futuristic jukebox that gives you the ability to "Play Music." I won't spoil for you what happens when you interact with it, but let's just say it relates to your new ability to mute in-game music.