The music industry has been in trouble for a long time. But now, aided by smartphone proliferation, new entrants are aggressively pushing alternative business models. This report examines the U.S. digital music market’s key disruption vectors: the areas where large market shifts are occurring and where companies will position themselves to gain share and increase revenues. These vectors will take some time to play out, but the overall industry should finally return to growth within the five-year forecast horizon, as digital music spending, driven by subscriptions, will average double-digit yearly growth to total $4.1 billion in 2015. Disruptive companies include Facebook, MOG and Pandora. For a full list of companies, and to read the full report, sign up for a free trial.