Is Will.I.Am the first artist to release a single whose title is a hashtag? We suspect not, but #thatPOWER is certainly the most high-profile example we’ve seen. The fact that it features Justin Bieber makes it even bigger Twitter-catnip… Anyway, Will’s label Interscope has inked a deal with Shazam to market the track, meaning that fans who tag it using the company’s app will be able to watch a bonus video with alternate scenes to the main video, while also tapping through to buy it on iTunes or listen to it on Rdio. The features work on Shazam’s iOS and Android apps. Watch for Rdio’s partnership with Shazam, by the way, it’s a potentially-huge traffic driver for the streaming service, as it looks to compete with bigger fish like Spotify, Deezer and (in the US) Rhapsody.