Deezer vs Genrenator

Deezer's REST API serves the catalog metadata behind the streaming app: tracks, albums, artists, playlists, charts, and full-text search. Unusually for a major streaming service its read endpoints are fully keyless — a plain GET against api.deezer.com returns real track data with no App ID, key, or token at all — while OAuth is reserved for endpoints that act on a user's own account, such as favorites or the activity feed. Responses can be requested as either JSON or XML via an output query parameter, and the API is free to use within Deezer's terms.

Genrenator is a novelty API that invents random music genre names and short genre "stories" by recombining fragments — instruments, beats, adjectives, prefixes, suffixes, and regions — drawn from Spotify's Every Noise At Once genre database. It's a keyless WordPress REST endpoint (GET /wp-json/genrenator/v1/genre/ or /story/, optionally with a count suffix like /story/25/ for multiple results) that returns plain JSON strings, free to use with no documented rate limit.