When every music-streaming service offers roughly the same content for roughly the same price, it can be hard for one service to differentiate itself from the competition. One of the ways Spotify is doing this is by expanding its messaging and social features, which not only strengthens the sense of community within the service, it makes it easier for music to be recommended and shared as well. As one of Spotify’s oldest competitors, it’s only natural for Pandora to expand its own such features in order to compete, which is why the company has launched a new service called AMPcast, which allows artists to connect with their fans through custom audio messages.