Was checking for music on my Samsung S8 phone on Google Music Play, and an offer popped up for 90 free days of premium Google Music Play subscription. I am not a new Samsung customer, I don't have a new Samsung phone, and I have taken advantage of similar 90 day free offers for Google Music Play in the past. May be targeted, but if you own a Samsung phone, worth checking out the Google Play Music app to see if you qualify.
FYI - Google will ask for credit card or Google pay in order to set up recurring payment. I have enough credits in my Google Play account thanks to surveys, so it automatically chose credits as auto payment option. Make sure to cancel in time - otherwise, it will auto renew.