Dive Brief: 

• Twitter is shutting down its #Music app, just six months after it launched. 
• The app fell to number 1,672 on app analytics firm Onavo's app popularity list. 
• The social network has now hired two new executives with heavy music experience—Nathan Hubbard, the former president of Ticketmaster, and Bob Moczydlowsky, from the music marketing service Topspin Media—to start on new music ventures, which may include a partnership with iTunes Radio. 

Dive Insight: 

The flop of Twitters #Music app is a rare failure for Twitter, which is set to launch an IPO. The main problem was in marketing the app, as it's not clear if the social network's millions of users were even aware of the app's existence. If they were aware the app existed, Twitter did a lackluster job in proving the app's worth.