UD5 Toolkit
Musical Interval Ear Trainer – Online Minor 2nd to Octave
Listen to two notes and identify the interval. Purely local Web Audio synthesis. Sharpen your relative pitch.
Tag: Music Theory & Tools
17+ toolsChord Progression Builder - Online Music Theory Tool
Select a key and build chord progressions (I-IV-V, etc.). Hear them played with simple piano sounds. Great for songwriting inspiration. Local audio synthesis.
Monophonic Synth - Online Play with Oscillator & Envelope
Play a simple monophonic synthesizer with your keyboard. Choose waveform, attack, decay, and filter. For music fun.
Online Metronome with Subdivisions - Precise Rhythm Trainer
Play a metronome with adjustable BPM, time signature, and subdivisions (eighth, triplet, sixteenth). Tap tempo and visual flash. Works offline for practice.
Random Chord Progression - Online Music Idea
Get a random chord progression (e.g., I‑V‑vi‑IV) with a suggested key. Play with built‑in piano sounds. For songwriters.
Online Piano Keyboard - Play & Record Simple Melodies
Play a virtual piano keyboard using mouse or computer keys. Sustain and octave control. Record and play back your tune.
Ukulele Tuner - Online GCEA Standard Tuning Notes
Play reference pitches for standard ukulele tuning. Also works for baritone and other variations. Simple and local.
Retro Synth Pad - Online 8‑bit Sound Generator
Play a collection of retro 8‑bit synth pads and leads using your keyboard. Record sequences and export as WAV. Pure Web Audio API.
Pomodoro Timer with Lo‑Fi Music - Online Focus Beats
Pomodoro timer with built‑in lo‑fi music playlist (synthetic). Focus and rest cycles. No copyright music; generated tones.
Piano Chord Finder - Online Visual Keyboard & Notes
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Random Band Name & Album Title Generator
Generate a random band name, album title, and cover art description. Perfect for music inspiration. Click to refresh.
Lo‑Fi Music Player - Online Focus & Study Beats
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
Drum Pattern Sequencer - Online Create Beats & Play
Lay down a beat on a grid sequencer for kick, snare, and hi-hat. Play, loop, and adjust tempo. All sound via Web Audio API.
Beat Sync Tester - Online Tap Tempo & BPM Counter
Tap any key to the beat and get the BPM (beats per minute). Useful for DJs, musicians, and running. Simple and accurate.
Online Metronome - Precise Beats per Minute & Time Signature
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Lyrics Finder - Online Song Lyrics Search Tool
Enter a song title and artist to find lyrics using public APIs. Quick preview and copy. A lightweight tool for music lovers.
Random Song Lyric Generator - Online Fake Music Line Creator
Generate a random, somewhat meaningful song lyric line. Write your own hit with AI‑free randomness. All local.