Analysis Tools

Music Analysis Tools

Professional-grade audio analysis tools for musicians, producers, and audio engineers. Pitch detection, frequency reference, and advanced analysis — all in your browser.

Chromatic Tuner

Mic-powered pitch detection for tuning any instrument. Displays the nearest note with cent-accurate tuning feedback. Works for guitar, bass, violin, and more.

Embed

Note Frequency Chart

Complete 108-note reference table from C0 to B8. Every note's frequency in Hz, MIDI note number, and equal temperament tuning data. Essential for producers and engineers.

Key Finder

Select the notes in your melody or chord progression and instantly discover which key(s) it belongs to. Includes diatonic chord and scale information for each key.

Chord Identifier

Select or play notes to identify the chord name, quality (major, minor, diminished, etc.), and see related chord voicings. Coming soon.

Spectrogram

Real-time audio frequency visualization showing harmonic content, overtones, and spectral patterns from your microphone input. Coming soon.

Audio Visualizer

Real-time waveform and spectrum analyzer. Visualize audio input as waveforms, frequency bars, or circular spectrum displays. Coming soon.

Understanding Music Through Analysis

Music analysis tools help you understand what you're hearing. Whether you're tuning an instrument, identifying a chord in your favorite song, or analyzing the frequency content of a mix, the right tools reveal the structure behind the sound.

Our chromatic tuner uses Web Audio API microphone access for real-time pitch detection — accurate enough for professional instrument tuning. The note frequency chart is an essential reference for audio engineering, synthesis, and instrument design. The key finder helps you identify the tonal center of any melody or chord progression.

Why Analysis Matters for Musicians

Developing your ear is one of the most important skills in music. Analysis tools accelerate this process by giving you immediate, accurate feedback on what you're hearing. Use the tuner to develop pitch awareness, the key finder to understand harmonic relationships, and upcoming tools like the chord identifier to recognize chord qualities by ear.

Utility & Practice Dashboard

Acoustic Grand Piano Practice & Control Hub

Comprehensive shortcuts, fingerings, techniques, and mobile controls for optimal playability.

Keyboard Shortcuts

QWERTY Key Mapping

  • A - K Natural scale notes (C4 to C5)
  • W, E, T, Y, U Accidentals / Sharps
  • Space Sustain Pedal Toggle

Chord Reference

chords & Techniques

  • C Major
    C - E - G
  • G Major
    G - B - D
  • A Minor
    A - C - E
  • F Major
    F - A - C

Step-by-Step Guide

How to Practice Effectively

  1. 1 Select your preferred tone variant or grand/upright acoustic preset.
  2. 2 Use mouse clicks, multi-touch taps, or mapped QWERTY keys to play notes.
  3. 3 Use the sustain pedal (Space key) and recording controls to capture your session.

Pro Tips

Technique & Ergonomics

  • ✓ Keep your wrists relaxed and slightly curved to prevent fatigue during practice.
  • ✓ Practice slow scales with a metronome before speeding up.
  • ✓ Use headphones to hear subtle harmonic damper overtones and resonance.

Common Mistakes

Beginner Traps to Avoid

  • ✕ Holding keys down too hard — browser audio triggers on initial press.
  • ✕ Ignoring timing drift — rely on visual feedback and metronome sync.
  • ✕ Practicing without proper wrist ergonomics or hand posture.

Mobile & Touch

Tablet & Phone Controls

  • • Supports 10-point multi-touch on iOS Safari and Android Chrome.
  • • Turn off silent mode on iPhones to ensure Web Audio API output.
  • • Use landscape orientation for optimal fingerboard width.

Knowledge Base & FAQs

Analysis Tools — Frequently Asked Questions

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

What music analysis tools does Play Musical Instruments offer?

We offer a chromatic tuner for instrument tuning, a note frequency chart covering all 108 notes, and a key finder to identify the key of your melody.

Coming soon: chord identifier, scale identifier, note detector, spectrogram, and audio visualizer.

How accurate is the online tuner?

Our tuner uses the Web Audio API's oscillator analysis for precise pitch detection.

It detects frequencies from your microphone and displays the nearest note with cent accuracy — comparable to dedicated hardware tuners.

What is a note frequency chart?

A note frequency chart maps every musical note to its fundamental frequency in Hertz (Hz).

Our chart covers all 108 notes from C0 (16.35 Hz) to B8 (7902.13 Hz) using A4 = 440 Hz equal temperament. It's an essential reference for audio engineers, producers, and instrument designers.

Can I identify chords from audio?

A chord identifier tool that analyzes audio input to detect chord names is in development.

For now, use our Chord Library to explore chord structures manually.

Are these analysis tools free?

Yes, every analysis tool is 100% free with no sign-up required.

They run entirely in your browser using the Web Audio API.

How does the Key Finder algorithm determine a song's musical key?

The Key Finder evaluates the harmonic weight and diatonic relationships of input chords against Krumhansl-Schmuckler tonal key profiles, calculating the most mathematically probable major or minor key.

What is the difference between equal temperament and just intonation?

Equal temperament divides the octave into 12 identical semitones of 100 cents, enabling modulation into all 12 keys.

Just intonation relies on pure harmonic frequency ratios (3:2, 4:3, 5:4) for beat-free consonance in a single key.

Can I use audio analysis tools on iOS and Android?

Yes! All frequency calculators and harmonic analyzers are fully optimized for mobile touchscreens and modern mobile web browsers.