Singular vocal performers (including lead and background singers, singer-songwriters, and singer-instrumentalists). This categorization is for any article about a singer, whether they perform solo, with a group or band, or both.
Composers, producers, songwriters, arrangers, DJs, engineers, and other non-performing personnel.
Groups, bands, crews, or other non-classical music ensembles. This categorization is for articles on group acts only; members of groups should be labeled with one of the codes above.