You can add anything to your bio over at https://waveform.social/settings
You can use the markdown format to add links and lists as you please.
For example:
Hi, I am Alex. You can find my music over on: - [Bandcamp](https://bandcamp.com) - [Soundcloud](https://soundcloud.com)
Which shows up as:
Hi, I am Alex. You can find my music over on: