Category:Infobox musical artist with missing or invalid Background field

This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories. This is a tracking category. It builds and maintains a list of pages primarily for the sake of the list itself. They are not part of the encyclopedia's categorization scheme. Pages are added to this category by Template:Infobox musical artist. This category is hidden on its member pages—unless the corresponding user preference (appearance → show hidden categories) is set. These categories can be used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience. These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications).

Pages are placed in this category if they transclude {{Infobox musical artist}}, but either do not include a background parameter or have a value other than one of the following supported values:

solo_singer

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.

non_vocal_instrumentalist

Non-vocal instrumentalists.

non_performing_personnel

Composers, producers, songwriters, arrangers, DJs, engineers, and other non-performing personnel.

group_or_band

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.

classical_ensemble

Orchestras and other classical music ensembles.

temporary

Temporary collaborative projects.