Apple offers free trials for its music service all the time, but they usually last for three months, after which you’re required to pay either $9.99 per month for a single license or $14.99 per month for a family license.
The good news is starting this week, new Apple Music users can get up to 5 months of music service for free. If you’ve already taken advantage of a free trial, then you are not eligible for this promotion.