🎵 Key Detector - Real-time Song Key Finder

Instantly identify the musical key of any audio playing in your tab (YouTube, Spotify, etc.)

Instantly identify the musical key of any audio playing in your browser. Whether you're on YouTube, Spotify, SoundCloud, or any other site, Key Detector provides accurate, professional-grade audio analysis for musicians, DJs, and music students. Using advanced Web Audio API processing and the Krumhansl-Schmuckler key-finding algorithm, this extension listens to your active tab and extracts pitch data to give you the most reliable results possible. Core Features: 🏆 Verdict Mode: Get a definitive key result with a color-coded confidence score. Choose between 15, 30, 45, or 60-second analysis windows for maximum accuracy. ⚡ Live Analysis: Perfect for modulating tracks. Watch a real-time chromagram ring and confidence bar as the song progresses. 🔒 Intelligent Key Lock: Once a high-confidence key is detected, the extension can lock the result so you can focus on your instrument. Privacy-First Design: All audio analysis is performed 100% locally in your browser. We never record, save, or transmit your audio data. Perfect for: - Musicians: Learn songs by ear faster by knowing the exact key. - DJs: Find the key of tracks for perfect harmonic mixing. - Producers: Identify the key of samples and loops on the fly. - Students: Improve your relative pitch and music theory understanding. Stop guessing the key and start playing. Install Key Detector today!