To add another artist into your Symphony account, just take the following steps:
Click on the current artist's name on the bottom left
2. You'll see an option pop up at the bottom for "+ Add New Artist"
3. Click "Add New Artist" to be taken the the New Artist page, which will let you search for any artist on Spotify by name or Spotify URL
4. From here, you can switch between artists by clicking the artist name on the bottom left, and add as many artists into your profile as you'd like.
Video Walkthrough