If you are working in an Chrome-like browser, then the extension of User-Agent Switcher (https://superuser.com/a/445873/589421) will help you.
Just add new "Custom-User Agent" and then new add the record to the "Permanent Spoof list":
User-Agent String:
Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.2970.0 Safari/537.36
Domain:
spotify.com
Open play.spotify.com and enjoy old design 😃
If you become the owner of a phrase
Connecting to Spotify...
Go to https://play.spotify.com/logout and log back into your account