Artist roles are identifiers you can use to indicate to services what role a given artist played in creating or performing a given release. These roles can be indicated on the track level or the album level.
Stores accept the following artist roles from Anti-Joy:
Main Artist
A main artist or "performer" is the major artist at the album level. For example, in Dominic Fike's album What Could Possibly Go Wrong., "Dominic Fike" is the main artist for this album.
Featured Artist
A featured artist is an artist who contributes to a track's performance, but not as the primary artist. Typically, featured artists provide a verse or vocal contribution to a song.