Free MP3 and WAV analyzer that detects musical key, BPM, and Camelot code in your browser
Play music together in real time with low latency hardware and software
Stage
Not given
Established
Founded
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Based in
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US
Pricing model
Free
Paid
Pricing
Not given
Lutefish Stream device $249 (includes 2 months of subscription); subscription $9.99/month (monthly) or $95.90/year (save 20%); Band Packs available with up to 15% savings on devices when buying multiple units; 60-day money-back guarantee
Key features
Analyze MP3 and WAV files up to 40 MB and 10 minutes long
Display multiple key candidates with confidence scores
Tap tempo counter for manual BPM verification
Half and Double tempo options to verify different pulse counts
BPM to milliseconds calculator for delay time conversion
Camelot wheel tool for comparing related keys
Browser-based processing with no file upload required
Ultra-low latency under 35ms for real-time playing
Studio-quality 48kHz audio with class-A preamps
Support for up to 5 musicians per session
Browser-based control with no software installation required
Session recording directly from the web interface
Optional video chat during sessions
XLR and 1/4-inch combo inputs for instruments and mics
Supports up to 2 input channels with mixer compatibility
Wired Ethernet connection for reliability and low latency
What makes it different
No file upload needed; all analysis happens in your browser for privacy
Shows multiple candidate results instead of forcing a single answer
Free to use with no signup or account requirements
Includes interactive practice tools with synthetic teaching examples
Samples long files from beginning, middle, and end for complete analysis
Dedicated hardware device eliminates computer latency compared to software-only solutions
Purpose-built for music performance with audio processing optimized for real-time collaboration
Plug-and-play setup without complex configuration or third-party software installation
Backed by Wenger Corporation's 80 years of music industry expertise
60-day money-back guarantee with free returns and return shipping
Find Key & BPM
Lutefish