Which metadata field MOST influences discoverability when a listener is searching for tracks that are of similar style, mood, or theme as the track being played?

The genre metadata field most directly influences discoverability when a listener is searching for tracks of a similar style, mood, or theme. While other metadata elements like artist name and track title are important for direct searches, the genre tags are critical for Spotify's algorithm to categorize and recommend music to listeners based on their listening habits and preferences. Spotify uses genre tags to create genre-based radio stations, algorithmic playlists like 'Discover Weekly', and related artist suggestions. Accurate and specific genre tagging is essential for the algorithm to understand the musical characteristics of a track and connect it with listeners who enjoy similar music. For example, a song with a blend of electronic and pop elements should be tagged with both 'electronic' and 'pop' genres, and more specific subgenres if appropriate, to maximize its visibility to listeners of both genres.