Tone Generator (Web Audio)
Generate precise sine, square, sawtooth, and triangle waves at any frequency. Live waveform display, adjustable volume, and frequency slider for tuning, testing speakers, and audio experiments.
Make Music with The Musician's Knife
Eleven instruments and references — powered by Web Audio
You need to make music. Practice and reference tools — offline forever. The Musician's Knife delivers 11 purpose-built tools in a single HTML file.
The Musician's Knife gives musicians eleven practical tools in a single HTML file, powered by the Web Audio API for real sound generation. Generate precise tones, tune your instrument with a live chromatic tuner, keep time with a visual metronome, tap out BPM, look up chords and scales on an interactive piano, explore the circle of fifths, reference note frequencies, generate DTMF tones, train your ear with intervals and chord recognition, and play a live MIDI keyboard with WAV recording — all completely offline.
WHAT'S INSIDE
11 tools in a single HTML file
Chromatic Tuner
Live microphone pitch detection with an analogue needle display. Shows detected note, cents deviation, and frequency. Lock to a specific note for targeted tuning. Adjustable A4 reference (415–466 Hz).
Visual Metronome
Rock-solid tempo from 20–300 BPM with time signatures from 1 to 12 beats. Visual beat indicators, accent on beat one, adjustable volume, and keyboard shortcuts for hands-free control.
BPM Tap Counter
Tap along to music and get an accurate BPM reading averaged over your taps. Shows individual tap intervals, running average, and instant visual feedback. Reset and re-tap anytime.
HOW IT WORKS
Three steps. No setup.
1
Download the file
Purchase The Musician's Knife and download a single HTML file. No installer, no account, no setup.
2
Open in any browser
Double-click to open in Chrome, Firefox, Safari, or Edge. Works on any operating system.
3
Start working
Your data stays in your browser's local storage. Nothing is uploaded. Ever.
COMPLIANCE & GEOGRAPHY
Global
Works in any country. No server dependency, no regional restrictions.
FAQ
Frequently Asked Questions
How does The Musician's Knife help me make music?
The Musician's Knife provides 11 interconnected tools for practice and reference tools — offline forever. Tone generator, chromatic tuner, metronome, BPM tap counter, chord finder, scale visualiser, circle of fifths, frequency table, DTMF generator, ear trainer, and MIDI studio with WAV recording. Real sound from a single file.
Do I need an internet connection to make music with The Musician's Knife?
No. The Musician's Knife runs entirely in your browser as a single HTML file. All 11 tools work offline.
What is the difference between The Musician's Knife and cloud-based alternatives?
Cloud tools store your data on external servers, require subscriptions, and stop working without internet. The Musician's Knife is a one-time purchase ($39) that runs locally. Your data never leaves your device.
Can I use The Musician's Knife on multiple devices?
Yes. Once purchased, you can use The Musician's Knife on any device with a web browser. Copy the HTML file to as many devices as you need.
No cloud One fileOne-time purchase
Get The Musician's Knife — $39Sovereignty as a Service