I checked on the gov website and the occupation is listed as Musician (Instrumental).
I also meant that in the 'invitation rounds' page, there was no category for my type of work listed from previous invitation rounds. However, when I checked the 'occupational ceiling' page, my occupation IS listed there, but sadly there hasn't been any invitations, so that's probably why.
I even checked previous years and it seemed like no one ever got invited for that occupation. I don't know if that means no one is applying, or that I have no chance whatsoever to get the visa. [link here for the page I'm referring to].
I will definitely look into a MARA agent, thank you for the suggestion!