why is not possible to use to devices in apple music
Why is not possible to use two devices with Apple music
iMac (27-inch, Late 2013), iOS 8.4
AApple Misic can be used and synced with many devices as ,on gad they use the same Apple ID, but it can strea to only one device at a time. You might want to look at the family sharing option, which allows up to six people to use the service.