# GreenGo Full Product Reference > The browser built for DJs and producers. Browse, capture, and prep DJ-ready tracks all in one place. GreenGo is a desktop browser that builds a complete audio-preparation suite directly into your browsing experience. Capture media from supported cloud audio pages as you browse, split stems, automatically detect BPM and musical key, analyze mood and energy, convert formats, tag ID3 metadata, and map your library with SoundMap. Everything is built into the browser there is no separate extension to install. Website: https://greengomusic.com Pricing: https://greengomusic.com/pricing.html Create Account / Start Trial: https://greengomusic.com/register.html Download: https://greengomusic.com/download.html FAQ: https://greengomusic.com/faq.html Blog: https://greengomusic.com/blog.html --- ## Product Overview - **Name**: GreenGo - **Category**: DJ/Producer Browser + Audio Preparation Suite - **Platform**: Windows 10/11 (64-bit) and macOS 12+ (Apple Silicon & Intel). - **Pricing**: Subscription with a 7-day free trial (credit card required). Monthly $5.99/mo, 3 Months $15.99 (≈ $5.33/mo), Yearly $60 ($5.00/mo). Renews automatically; cancel anytime. - **Account**: A free GreenGo account is required. Your subscription, settings, and SoundMap stay synced to it. - **Updates**: All updates included with any active subscription. - **Tech Stack**: Chromium-based browser shell, Python audio engine (librosa + numpy + scipy), FFmpeg for conversion, ML models for stem separation and vibe analysis --- ## Core Features ### Built-in Capture (no extension) The capture workflow is built directly into the GreenGo browser. On supported cloud audio pages, an in-page "capture to GreenGo" / "import with GreenGo" button lets you queue tracks as you browse. There is no separate Chrome/Firefox extension to install it is part of the browser itself. Captures are queued instantly and your tracks are waiting inside GreenGo. Everything runs locally on your machine. ### STEM Separation Split any track into six isolated stems vocals, drums, bass, piano, guitar, and other for remixes, mashups, acapellas, and live re-edits. Uses Meta's Demucs AI source-separation models. Runs locally with no file upload to servers. Free tier: 3 songs for stem separation. ### Batch URL Importing Paste one or many URLs from supported cloud audio sources. GreenGo imports audio, converts to your preferred format (MP3/WAV/FLAC/M4A/OGG/AAC), and processes everything in parallel with configurable thread count (1–8 workers). ### BPM Detection Ultra high-precision BPM detection using multiple librosa methods with weighted consensus: - IOI histogram analysis (weight 2.0) - Beat interval tracking (weight 1.8) - Integer BPM snapping to common production tempos - High-pass filter at 60 Hz to remove sub-bass interference - 30-second analysis window at 22050 Hz sample rate - Beat phase coherence verification - BPM range: 70–200, covering hip-hop through drum & bass ### Key Detection Multi-signal fusion key detection engine (v9-genre) with genre-aware parameter profiles: - libKeyFinder via keyfinder_bridge.dll (ctypes) - librosa chroma ensemble (CQT + CENS + STFT) with segment voting - STFT-only chroma analysis (anti-CQT bias, C# leakage fix) - Sub-bass root detection for EDM tonic confirmation - Auto-classifier uses BPM + spectral centroid for genre detection - Manual genre override from UI - Enharmonic normalization (flats → sharps) - Output in Camelot notation (Rekordbox, Serato, VirtualDJ) and Open Key notation (Traktor) ### Energy & Mood Analysis (Vibe Engine) Vibe detection engine using trained ML models: - RandomForest regressors for energy and danceability - XGBoost 9-class mood classifier with genre-aware probability weighting - 80 selected features from 224 fast librosa features (MFCC, RMSE, spectral bandwidth/centroid/contrast/rolloff, ZCR) - Trained on 13,129 FMA tracks + 1,730 Jamendo human-tagged tracks - Energy: 1–10 integer scale; Danceability: 1–10 integer scale - Mood labels: Aggressive, Intense, Euphoric, Dark, Neutral, Happy, Melancholic, Chill, Romantic - Processing: ~1.1–1.4 seconds per song after initial model load ### SoundMap Visualize your entire library on an interactive map and discover harmonically and energetically compatible tracks for smoother transitions and faster set building. ### ID3 Metadata Tagging Full DJ metadata compatibility: - MP3 ID3 tags: TBPM, TKEY, TXXX:INITIALKEY (Camelot), TXXX:OPENKEY (Traktor), TPE1, TIT2, COMM, TCON - M4A/MP4 tags: tmpo, ©key, ©ART, ©nam, ©cmt, ©gen - FLAC/OGG tags: BPM, INITIALKEY, ARTIST, TITLE, COMMENT - Compatible with Rekordbox, Serato DJ, Traktor, VirtualDJ, Engine DJ ### Format Conversion - Supported formats: MP3, WAV, AAC, FLAC, M4A, OGG - Quality presets: 128kbps, 192kbps, 256kbps, 320kbps - Uses FFmpeg (auto-downloaded on first launch) ### Ad Blocker Built-in ad blocking across the browser for a cleaner, faster, safer browsing experience. --- ## Frequently Asked Questions ### What is GreenGo? GreenGo is a desktop browser built for DJs and producers. As you browse supported cloud audio pages, you can capture tracks directly, then split stems, detect BPM and musical key, analyze mood and energy, convert formats, tag ID3 metadata, and map your library all built into the browser. ### Do I need to install a browser extension? No. In earlier versions GreenGo offered a separate "GreenGo Helper" extension. Now the capture functionality is built directly into the GreenGo browser there is nothing extra to install. Supported audio pages get an in-page capture button automatically. ### Is GreenGo a subscription? Yes. GreenGo is a subscription with a 7-day free trial. Plans are Monthly ($5.99/mo), 3 Months ($15.99) or Yearly ($60). Subscriptions renew automatically and can be cancelled anytime from your account. The trial gives full access after it ends, your subscription continues on the Monthly plan unless you cancel. ### How accurate is GreenGo's BPM detection? GreenGo uses ultra high-precision BPM detection with multiple analysis methods including IOI histogram analysis and beat interval tracking with weighted consensus, integer BPM snapping, a 60 Hz high-pass filter, and beat phase coherence verification. The BPM range is 70–200, covering all major DJ genres. ### How does GreenGo detect musical key? GreenGo uses a multi-signal fusion key detection engine with genre-aware profiles, combining libKeyFinder DLL analysis, librosa chroma ensemble (CQT + CENS + STFT), STFT-only chroma analysis, and sub-bass root detection. Results are output in both Camelot (Rekordbox, Serato, VirtualDJ) and Open Key (Traktor) notation. ### Can GreenGo separate stems? Yes. GreenGo can split a track into six isolated stems vocals, drums, bass, piano, guitar, and other using Meta's Demucs AI source-separation models. Runs locally with no file upload. Free tier includes 3 songs for stem separation. ### Does GreenGo work with Rekordbox, Serato, Traktor, VirtualDJ, and Engine DJ? Yes. GreenGo writes BPM, key (Camelot and Open Key), title, artist, and genre directly into ID3 tags recognized by Rekordbox, Serato DJ, Traktor, VirtualDJ, Engine DJ, and any DJ software that reads standard ID3 metadata. Supported formats include MP3, M4A, FLAC, OGG, and WAV. ### What audio formats does GreenGo support? GreenGo supports downloading and converting to MP3, WAV, AAC, FLAC, M4A, and OGG, with quality options of 128, 192, 256, and 320 kbps. ### What sources can GreenGo capture from? GreenGo supports 10+ cloud audio sources. Capture is built into the browser supported pages get a one-click capture button as you browse. ### Does GreenGo work on Mac? Yes. GreenGo supports Windows 10/11 (64-bit) and macOS 12+ on both Apple Silicon and Intel. Download the macOS installer from https://greengomusic.com/download.html. ### Does GreenGo detect mood and energy? Yes. GreenGo includes a vibe detection engine (RandomForest and XGBoost models trained on over 14,000 tracks) that detects energy (1–10), danceability (1–10), and mood labels including Aggressive, Intense, Euphoric, Dark, Neutral, Happy, Melancholic, Chill, and Romantic. ### What is Camelot notation? Camelot notation is a simplified key labeling system used by DJs for harmonic mixing. Each key gets a number (1–12) and a letter (A for minor, B for major) e.g., A minor = 8A, C major = 8B. Adjacent keys on the wheel mix well together. GreenGo outputs both Camelot and Open Key notation. --- ## GreenGo vs Alternatives ### GreenGo vs Mixed In Key Mixed In Key ($58 one-time) focuses on key and BPM analysis of local files. GreenGo (from $5.99/month) is a complete browser-based pipeline: capture audio as you browse, split stems, detect BPM and key with multi-algorithm fusion, analyze mood and energy with ML, write ID3 metadata, convert formats, and map your library with SoundMap. Subscription with a 7-day free trial. ### GreenGo vs Tunebat Tunebat is a free online BPM and key finder for uploaded files. GreenGo is a full browser that handles the entire workflow capturing from pages you browse, batch BPM and key detection with multi-signal fusion, stem separation, mood analysis, ID3 tagging, format conversion, and library mapping processing locally with higher-accuracy algorithms and writing results straight into your files. ### GreenGo vs KeyFinder KeyFinder is a free, open-source key-detection tool. GreenGo goes far beyond key detection it is a full browser and audio-prep suite that captures from the web, separates stems, detects BPM and key (using libKeyFinder as one of four fusion signals), analyzes mood/energy, tags metadata, converts formats, and maps your library. --- ## Blog Posts ### Reference Pages - Audio Format Reference for DJs: MP3, WAV, FLAC, AIFF, AAC, OGG: https://greengomusic.com/blog/audio-format-reference-for-djs-mp3-wav-flac-aiff-aac-ogg.html - DJ Software Comparison 2026: Feature Matrix for DJs (Rekordbox vs Serato vs Traktor vs VirtualDJ vs Engine DJ): https://greengomusic.com/blog/dj-software-comparison-2026-feature-matrix.html - DJ Transition Types: Complete Reference Guide (2026): https://greengomusic.com/blog/dj-transition-types-reference-guide.html - ID3 Tag Field Reference for DJ Software (2026): https://greengomusic.com/blog/id3-tag-field-reference-dj-software.html - Musical Key by Genre: Complete Reference Chart (2026): https://greengomusic.com/blog/musical-key-by-genre-complete-reference.html - BPM Chart: Tempo Ranges for Every Music Genre: https://greengomusic.com/blog/bpm-chart-tempo-ranges-every-music-genre.html ### DJ Library Preparation - How to Organize Your DJ Library: Folder Structure, Naming and Tags: https://greengomusic.com/blog/how-to-organize-dj-library-folder-structure-naming-tags.html - The Complete Guide to Preparing Tracks for a DJ Set: https://greengomusic.com/blog/complete-guide-preparing-tracks-for-dj-set.html - Best Batch Audio Tagger in 2026: Tag Hundreds of MP3s in Minutes: https://greengomusic.com/blog/best-batch-audio-tagger-bulk-mp3-tag-tool-2026.html - What Is ID3 Metadata and Why Every DJ Needs It Tagged Correctly: https://greengomusic.com/blog/what-is-id3-metadata-why-every-dj-needs-it-tagged-correctly.html - Best MP3 Tag Editors in 2026: Free & Paid Options Ranked: https://greengomusic.com/blog/best-mp3-tag-editors-2026-free-paid-ranked.html - GreenGo vs Mixed In Key: Which Is Better for DJ Library Prep in 2026?: https://greengomusic.com/blog/greengo-vs-mixed-in-key-dj-library-prep-2026.html - Open-Format DJ Set Prep: 50 Tracks in Under 30 Minutes: https://greengomusic.com/blog/open-format-dj-set-prep-50-tracks-under-30-minutes.html - 5 Time-Saving DJ Workflows Every Beginner Should Know: https://greengomusic.com/blog/5-time-saving-dj-workflows-every-beginner-should-know.html ### BPM and Key Detection - BPM Detection Accuracy Compared: Rekordbox, Serato, Traktor, Mixed In Key, GreenGo: https://greengomusic.com/blog/bpm-detection-accuracy-comparison-rekordbox-serato-traktor-mixed-in-key-greengo.html - DJ Energy Levels Explained: The 1-10 Scale for Set Programming: https://greengomusic.com/blog/dj-energy-levels-explained-1-to-10-scale-for-set-programming.html - How to Find the BPM of Any Song (5 Methods Compared): https://greengomusic.com/blog/how-to-find-bpm-of-any-song-5-methods-compared.html - How to Detect the BPM of Any Song (3 Methods That Actually Work): https://greengomusic.com/blog/how-to-detect-bpm-of-any-song-3-methods.html - Song Key Finder: How to Detect the Musical Key of Any Track: https://greengomusic.com/blog/song-key-finder-how-to-detect-key-of-any-track.html - What Does Key Lock Mean for DJs? Harmonic Mixing Explained: https://greengomusic.com/blog/what-does-key-lock-mean-for-djs-harmonic-mixing-explained.html - 10 Best Tunebat Alternatives in 2026: Free BPM & Key Finders Tested: https://greengomusic.com/blog/best-tunebat-alternatives-2026-free-bpm-key-finder.html - Sort Loops by BPM in Your Home Studio: A Complete Guide: https://greengomusic.com/blog/sort-loops-by-bpm-in-your-home-studio-a-complete-guide.html ### Stem Separation and AI Tools - How to Use Stem Separation in GreenGo: A Step-by-Step Guide: https://greengomusic.com/blog/how-to-use-stem-separation-in-greengo-step-by-step.html - How Stem Separation Actually Works: The AI Behind Splitting Tracks: https://greengomusic.com/blog/how-stem-separation-works-ai-behind-splitting-tracks.html - Best AI Vocal Removers in 2026: Tested & Compared: https://greengomusic.com/blog/best-ai-vocal-removers-2026.html - AI Music Tools in 2026: What's Real and What's Hype: https://greengomusic.com/blog/ai-music-tools-2026-whats-real-and-whats-hype.html - How to Make a Mashup with AI in 2026: Complete Beginner's Guide: https://greengomusic.com/blog/how-to-make-a-mashup-ai-2026.html ### GreenGo Guides - How to Use GreenGo's Music Toolbar: A Complete Guide to Every Tab: https://greengomusic.com/blog/how-to-use-greengo-music-toolbar-complete-guide.html - How to Edit Metadata in GreenGo: The Complete ID3 Tag Guide: https://greengomusic.com/blog/how-to-edit-metadata-in-greengo-id3-tag-guide.html - How to Use SoundMap in GreenGo: Visualize Your Sample Library: https://greengomusic.com/blog/how-to-use-soundmap-in-greengo-sample-library-visualization.html - How to Use Highlights in GreenGo: Discover Music at Its Best Moments: https://greengomusic.com/blog/how-to-use-highlights-in-greengo-music-discovery-feed.html - How to Convert Audio Files in GreenGo: Download & Format Guide: https://greengomusic.com/blog/how-to-convert-audio-files-in-greengo-format-guide.html - How to Capture Tracks from the Web into Your DJ Library: https://greengomusic.com/blog/capture-tracks-web-dj-library-greengo-browser.html ### DJ Software and Production - Best DJ Software in 2026: Ranked and Reviewed: https://greengomusic.com/blog/best-dj-software-2026-ranked.html - Best Music Production Software for Beginners in 2026: https://greengomusic.com/blog/best-music-production-software-beginners-2026.html - Music File Converter Guide: WAV vs FLAC vs MP3 vs AAC: https://greengomusic.com/blog/music-file-converter-guide-wav-flac-mp3-aac.html - GreenGo on macOS: A New Step for DJ Audio Prep: https://greengomusic.com/blog/greengo-macos-dj-audio-tool.html --- ## All Pages - Homepage: https://greengomusic.com - Pricing: https://greengomusic.com/pricing.html - Create Account / Start Trial: https://greengomusic.com/register.html - Download: https://greengomusic.com/download.html - STEM Separation: https://greengomusic.com/stem-separation.html - SoundMap: https://greengomusic.com/soundmap.html - Audio Converter: https://greengomusic.com/converter.html - Track Analysis: https://greengomusic.com/analysis.html - FAQ: https://greengomusic.com/faq.html - Blog: https://greengomusic.com/blog.html - Updates: https://greengomusic.com/updates.html ## Legal - Terms of Service: https://greengomusic.com/terms-of-service.html - Privacy Policy: https://greengomusic.com/privacy-policy.html - Refund Policy: https://greengomusic.com/refund-policy.html ## Contact - Email: support@greengomusic.com