Yahoo subsidiary IntoNow is one of the companies competing in the social TV market – apps to use while watching TV to chat to other viewers and get more information on what’s on the screen. The latest version of IntoNow has added music into the mix: it’s capable of identifying songs being played in the background of shows, including covers and live performances. Users of the app can then buy tracks from iTunes or watch videos on YouTube. A similar feature is already in Zeebox, which is launching in the US soon. And of course, Shazam’s expansion into social TV hasn’t come at the expense of its core music identification features either.