It would be really nice to have two small buttons added.
1) "www"-button, which instantly opens or switches to your web browser and searches google, bing or whatever about the band. i.e. If I click on the "www"-button of the band "Massive Attack" it opens my web browser with a search of "Massive Attack" in google. (maybe add the option to change the default search engine in the preferences)
2) "wikipedia"-button, which instantly opens or switches to your web browser to perform a search on wikipedia of the band. basically the same idea as the first button but with wikipedia.
If I'm finding new bands through Spotify, that I really enjoy, I often google them or read their wikipedia page while I'm listening to the band for the first time. These button features could also be used to instantly check if the band has more albums/tracks than listed in spotify or to find lyrics that aren't in the spotify app(s).