Just in case you missed it, fundamentally because I certainly did, Spotify has released their Progressive Web App in Chrome and it is pretty darn good. Like other PWAs, you install it from the menu in Chrome 67 or later while on the Spotify web player page. This will install the app on your laptop so you can quickly access it with a single click.
For those of you who may not know what a Progressive Web App is exactly, it is a web page in an app-like experience. The idea being that you can install it instead of a full fledged app to and get that experience. Chrome 67 introduced support for Progressive Web Apps and you can install them in Chrome OS and other platforms.