Shazam, the app that identifies songs by simply listening to them, and streaming and download music service Spotify, have announced a partnership that will let users quickly access any song they have heard and tagged in Shazam. Called Play in Spotify, the feature will launch Spotify from Shazam and not only return the tagged song but also other tracks from the artist. The feature does require a premium Shazam app on the iPhone, iPod touch and Android devices.