You can add a touch of Star Wars to your Spotify experience. Here's how you can turn the progress bar into a lightsaber.
Spotify has jumped aboard the Star Wars hype train and implemented an Easter egg of its own. Its progress bar can be turned into a lightsaber.
All you have to do is load up the desktop client, look for the Complete Star Wars Soundtrack in Spotify's library, and start playing. The progress bar will change to a lightsaber, and you can even switch between a couple of different lightsaber models by clicking on the hilt.
This effect remains in place until you restart Spotify, so all of your music listening can take on a Star Wars feel.
If you don't want to listen to the Star Wars soundtrack, you can get the same effect by searching for "THX1138". That's also an Easter egg; it's a nod to the first film that George Lucas directed.
It's somewhat tricky for Spotify to tie its services in with the events unfolding in a galaxy far, far away, but it's not afraid to try. The service recently launched a site to match you with a Star Wars character based on what you've been listening to.