There are several websites that give away free spotify codes which might lead you to wonder whether these actually work. The answer is that it obviously depends upon where you get these codes from. Spotify is a great network to stream your favourite music from however gaining acces to it would depend upon your subscription level and if you cannot subscribe by paying for it yourself then you would have to look for a working spotify code. For that, you have to look for a provider that can be trusted as it is not easy to come across a working spotify code given that thousands of people are searching for it each day.
If you search for free spotify codes online, there won't be a shortage of providers claiming to have them ready. However that may not always be true as many websites claiming to provide free spotify codes would not actually have them. Your job would therefore be toughened as you will have to go through the various websites that you come across to try your luck out in figuring out which ones could actually get you the spotify code that you may be eager for. But ones you have found the right website, it would be easy for you to go back there in future for more codes.