If you write [ @username ] (remove the spaces), the website will convert it into a tag. Whoever is tagged will receive a notification saying that they were mentioned.
You can check how to do that and how to add other kinds of texts in > https://lyricstranslate.com/en/filter/tips
But that «TrampGuy» link is linked with the artist!
You can use standard HTML anchor tags, like so:
should produce this:
However, contrary to the [@TrampGuy] syntax, the user will not get notified that you mentioned him, so don't expect an answer.