Essentia

essentia.upf.edu · checked 14 Nov 2026

#1 · AI Song Analyzers

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How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on AI Song Analyzers6.4#1 of 27

Essentia is a C++ library for audio analysis and audio-based music information retrieval, with Python and JavaScript bindings.

Pricing

Open-source license (Affero GPLv3)Non-commercial applications · commercial use requires separate licensingFree

As essentia.upf.edu lists them, checked 14 Nov 2026.

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Linux
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Facts

Website: essentia.upf.edu
Price: Free tier
Free trial: Not stated
Algorithm collection: The library includes audio I/O, signal processing, statistical, spectral, temporal, tonal, and high-level music descriptor algorithms.
Commercial licensing: A proprietary license is available upon request; the site directs licensing inquiries to the Music Technology Group.
Download options: Downloads include releases, Docker images, Python wheels for Linux and macOS, and precompiled extractor binaries for Linux, macOS, and Windows.
Founded: 2006
Integrations: Third-party extensions are listed for PureData, Max/MSP, openFrameworks, and Matlab; the library also includes a Vamp plugin for Sonic Visualiser.
Intended users: Essentia is designed for research experimentation and large-scale industrial audio analysis.
Machine learning: It supports inference with TensorFlow models and Gaia, and provides examples of pretrained TensorFlow and Gaia SVM models.
Maker: The maker is the Music Technology Group at Universitat Pompeu Fabra (UPF).
Model license: Pretrained machine-learning models are offered under CC BY-NC-SA 4.0 for non-commercial use, with proprietary licensing available on request.
Platform caveat: The library supports Linux and macOS, with partial support for Windows, iOS, and Android, and can be cross-compiled for web use.
Streaming mode: Its streaming mode connects algorithms automatically, uses less boilerplate and memory, and supports many real-time use cases.
Support: The documentation lists GitHub issues, GitHub discussions, and an FAQ as support routes.

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