This hypothetical app is a never ending playground for music lovers. You can build a personal collection of music, not only for you to enjoy but also for your friends to discover as well. While you listen to any track of your choosing, you may also invite a friend to listen along with you in real time, or vise versa. Like your own personal radio station! No matter the distance, you can connect with other users by listening to music together as if you were in the same room. No sharing of earbuds necessary.