FEAT_FORMAT Error Credits & featured artists

Featured credit must be lowercase 'feat.' or 'with' in parentheses/brackets

A featured credit in a title is written (feat. Name) or (with Name): lowercase, feat with a full stop, inside parentheses or square brackets.

Severity
Error
Field
track_title
Checks
Titles
Rule ID
FEAT_FORMAT
§ 01

How the checker tests it

Flags ft., ft, feat without a full stop, featuring, Feat. and w/, and any feat. that does not open a parenthesis or bracket.

Fix. Rewrite as Title (feat. Name).

§ 02

Examples

Golden Hour ft. Kai Lane Fails FEAT_FORMAT Golden Hour (feat. Kai Lane)
Golden Hour featuring Kai Lane Fails FEAT_FORMAT Golden Hour (feat. Kai Lane)
Golden Hour Feat. Kai Lane Fails FEAT_FORMAT Golden Hour (feat. Kai Lane)
Golden Hour feat. Kai Lane Fails FEAT_FORMAT Golden Hour (feat. Kai Lane)
Golden Hour (feat. Kai Lane) Passes
Golden Hour (with Kai Lane) Passes

Results are computed by the rule on this page as it loads.

§ 03

Try it

Golden Hour DURATION ft. Kai Lane
Fails 2 title rules 1 search term
FEAT_FORMAT Featured credit must be lowercase 'feat.' or 'with' in parentheses/brackets Golden Hour (feat. Kai Lane)
FEAT_IN_TITLE Prefer FeaturedArtist role over featuring text in title Golden Hour
Formatting fix Golden Hour (feat. Kai Lane)
§ 05

Cite this rule

Metadata Style Guidelines (2026). FEAT_FORMAT: Featured credit must be lowercase 'feat.' or 'with' in parentheses/brackets. https://www.metadatastyleguidelines.com/rules/feat-format

https://www.metadatastyleguidelines.com/rules/feat-format