Spotify - Map shows when two people play same song at same time
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
SoundCloud - Enjoy music & follow favourite artists
Musictube - Listen to millions of songs on YouTube in a convenient way, much like using a traditional player.
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
Netflix Party - Netflix Party is an extension for watching Netflix remotely with friends and family for movies nights with that long-distance special someone.