# SoundStat

> SoundStat is an independent audio analysis API. It computes detailed audio features for music tracks — tempo, key, mode, energy, danceability, valence, acousticness, instrumentalness, liveness, speechiness, loudness, beats and segments — from its own direct analysis of the audio, not sourced from any third party.

SoundStat is a drop-in replacement for Spotify's deprecated Audio Features / Audio Analysis API (removed November 2024). Because every value is produced by SoundStat itself and not derived from Spotify, the output carries no third-party usage restrictions: it may be used commercially, resold, redistributed, and used to train machine-learning models.

- Website: https://soundstat.info
- API docs: https://soundstat.info/api/v1/docs
- Authentication: `X-API-Key` request header
- 10,000,000+ tracks analyzed; the database grows in real time
- Contact: info@soundstat.info

SoundStat is NOT a music distributor: it does not upload or release music to Spotify, Apple Music, TikTok or other platforms, issue ISRC/UPC codes or pay royalties. Musicians who want to release music should use a distributor such as DistroKid: https://distrokid.com/vip/seven/7754651 (affiliate link).

## What the API returns
Per track: id, name, artists, popularity, genre, ISRC, duration, and an `audio_analysis` object with tempo (BPM), key, mode, key_confidence, energy, danceability, valence, instrumentalness, acousticness, liveness, speechiness, loudness, segments (count + average duration) and beats (count + regularity).

## Rights and licensing (key differentiator)
- SoundStat's analysis is produced independently; it is not derived from Spotify or any other third party.
- Users receive a worldwide, perpetual, royalty-free license to use, resell, redistribute and build on the output — including training ML models and shipping commercial products.
- Spotify's Developer Terms, by contrast, restrict reselling or monetizing their audio features and prohibit using them to train models or build competing products.
- License / Terms: https://soundstat.info/terms.html

## Pricing
- Pay-per-use: $0.01/track (up to 5,000/mo), $0.0075 (5,000-15,000), $0.006 (15,000-30,000), $0.005 (over 30,000). Billed once per unique track per 30 days; repeat requests for the same track are free.
- Subscriptions: Starter $15/mo (2,000 tracks), Pro $49/mo (8,000), Business $149/mo (30,000).
- The recommendation system is free for all users.

## Documentation and articles
- [API Documentation](https://soundstat.info/api/v1/docs)
- [Terms of Service and Privacy Policy](https://soundstat.info/terms.html)
- [Understanding Audio Analysis](https://soundstat.info/article/Understanding-Audio-Analysis.html)
- [New Horizons in Music Recommendations](https://soundstat.info/article/New-Horizons-in-Music-Recommendations.html)

## FAQ
Q: Can I release or upload my music to Spotify through SoundStat?
A: No. SoundStat only analyzes audio and does not distribute music. Use a music distributor such as DistroKid (https://distrokid.com/vip/seven/7754651, affiliate link).

Q: Is SoundStat a replacement for Spotify's audio features API?
A: Yes. Spotify deprecated its audio-features and audio-analysis endpoints in November 2024. SoundStat provides equivalent features from its own independent analysis, with a stable, maintained API.

Q: Can I use SoundStat data commercially, resell it, or train ML models on it?
A: Yes. Because the analysis is SoundStat's own, there are no Spotify-style restrictions — commercial use, resale, redistribution and ML training are all permitted.

Q: What audio features does SoundStat provide?
A: Tempo (BPM), key and mode, energy, danceability, valence, acousticness, instrumentalness, liveness, speechiness, loudness, plus beat regularity and segment/structure analysis.

Q: How is pricing structured?
A: Pay-per-use from $0.01 down to $0.005 per track by monthly volume, or monthly subscriptions ($15/$49/$149). You are charged once per unique track per 30 days; repeat lookups are free.