You'd be amazed how often the two of us get mistaken for the other, never thought I'd see a question like this!
The answer is yes! Spotify has made it possible to embed their tracks and playlists on external sites. You should at the very least be able to add this to anywhere on Shopify where HTML can live (Pages, Blogs, and Product Descriptions to name a few).
Hope that helps :)
We've spotted that artists can now sell merch on Spotify (using Merchbar).
We work with a couple of musicians, would it be possible to connect their Shopify stores to promote merch on their Spotify pages?
Are you working on such an integration, with either Merchbar or Spotify?