how do I authorize my new Mac air to listen to music on my apple account

Here's how to authorize or deauthorize your computer for iTunes Store purchases. But are you signed in on your new MacBook Air -- which, I might add, I have and I friction' love, particularly the snappy, writing-inducing keyboard -- to your Apple ID and is that Apple ID the same one that you use to sign in to Apple Music? If so, you should be good to go. If problems ensue, please advise. If not....

Stream on!

JDee