Facebook has a new weapon in the battle against Twitter to host lucrative conversations about media. A Shazam-esque opt-in feature coming to the iOS and Android status composer can activate your phone’s microphone, recognize a TV show you’re watching or song you’re listening to, and tag it in your News Feed post. Friends can then listen to a 30-second preview of songs or see a link to a TV show’s Page. Facebook built the audio recognition feature from scratch over the last year and it will roll out to iOS and Android users in the U.S. over the coming weeks. It’s an extension of the feelings and activity sharing option rolled out last year that lives in the little emoticon icon in the status composer. Facebook says 5 billion posts have used the option to share what you’re feeling (excited, tired), doing (Drinking coffee, playing basketball), or what media you’re enjoying.