Apple Music gained 11m subscribers in the first month

"One month after unveiling its new streaming-music service, Apple has locked in 11 million trial members, company executives told USA TODAY.
"We're thrilled with the numbers so far," says Eddy Cue, Apple's senior vice president of Internet software and services, adding that of that sum, 2 million have opted for the more lucrative family plan at $14.99 a month for up to six people."

Source:  USA Today, 6th August 2015