3 Months free trial of Amazon Music for new users when you register. $11.99/month afterwards.
3 Months Free - Offer Terms & Conditions as per Amazon Music Website:
This 3 months free trial offer of a monthly Amazon Music Unlimited Individual Plan is a limited time offer and expires on September 8th 2022 at 1am AEDT. The offer is valid for new customers to Amazon Music Unlimited and only redeemable towards the Amazon Music Unlimited Individual Monthly Plan. After the promotional trial, your subscription will automatically renew at $11.99 per month until you cancel. This offer cannot be combined with any other offer. The offer is valid for digital content and services offered on www.amazon.com.au by Amazon Australia Services Inc. Offer limited to one per customer and account. Amazon reserves the right to modify or cancel the offer at any time. Offer is non-transferable and may not be resold. If you violate any of these terms, the offer will be invalid.
Apart from being the default Alexa music service. What does it have that spotify/Apple/YT/etc doesn't have?