Not by as much a I'd have thought:
> Premium Gross Margin was 27.3% in Q4, up from 26.1% in Q3, and up 200 bps Y/Y. Ad-Supported Gross Margin was 22.1% in Q4, up from 18.6% in Q3, and up 350 bps Y/Y.
https://www.businesswire.com/news/home/20190206005298/en/?ut...