What You Can Build

Essentia API provides the building blocks for a wide range of audio-intelligent applications. Explore some of the most common use-cases below.

Music Discovery & Recommendation

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Content-Based Recommendation

Compute detailed audio features to find similar-sounding tracks in your catalog, powering "track radio" features and content discovery without relying on user data.

Explore analysis models →

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Music Tagging & Curation

Automatically annotate music with over 400 tags for genre, mood, instrumentation, and era. Use these tags to build smart playlists and improve search filtering.

See all available tags →

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Engagement & Mood Analysis

Characterize music by its emotional valence (happy/sad), arousal (relaxed/aggressive), and danceability to create the perfect soundtrack for any context.

Analyze a track now →

Audio Content Analysis

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Voice Activity Detection

Identify and isolate segments of speech within any audio stream. Ideal for podcast transcription, content moderation, or separating vocals from music.

View voice models →

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Instrument Recognition

Detect the presence of various instruments in a track. Useful for sample discovery, music education apps, or royalty-free music categorization.

See instrument list →

Production & Engineering Tools

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Musical Key & Tempo Analysis

Accurately estimate the musical key, tempo (BPM), and beat positions of a song. Essential for DJ software, music production tools, and synchronization.

Get Key & BPM →

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Loudness Metering (EBU R128)

Analyze loudness levels according to the EBU R128 broadcasting standard to ensure your audio is compliant and consistent across platforms.

Learn about loudness →