With Pandora, Spotify and iTunes Radio among the digital music services competing for mobile advertising budgets, the music industry is following the general growth of that sector closely. There should be strong interest in research firm eMarketer’s latest set of predictions for mobile ad spending in the US, then. The company expects it to double year-on-year to $9.6bn in 2013, then grow a further $5bn in 2014. In fact, mobile is what’s currently driving the growth of digital advertising spending in the US according to the stats, which claim desktop ad spends will rise just 1.7% in 2013. Just as interesting is eMarketer’s forecast that mobile ad spending will overtake desktop in 2016: by 2017 it expects mobile to be on $35.6bn compared to desktop’s $27.2bn. While a big chunk of this will go to Google, Facebook and Twitter, the potential is also clear for music services, especially those selling across both platforms.