Your Spotify username is the key to many features on Spotify. It is one of the ways, aside from using your email or associated social media accounts, to log in to Spotify. Additionally, if you share your username with a friend, they can enter it into their Spotify search bar, reach your user profile, and start following you. That way, you can listen together. However, is it something you can alter? Can you change your Spotify username?
Read more: How to find your Spotify username
THE SHORT ANSWER