New York Post: Apple Music has garnered some 15 million users in its three short months in business, according to music industry sources. The figure is said to be a home run for Apple Music execs, whose projected number was on par, but who conceded that a slow first quarter ramp-up would be the norm. Around half of those who signed up have not turned off auto-pay, which means they will convert from free to paid customers. The initial free three-month trial ends on Sept. 30.