🎵 Simple Chord Builder

Type any 3+ notes and hear them play smoothly in ascending order!

Type Your Notes Here:
💡 Type notes any way: "GBD" or "G B D" or "CEG" or "C E G" - all work!
KEYS, CODES & MODES
Visual Music Theory
Learn • Explore • Master
🎸 The CAGED System
5 Essential Chord Shapes - Click to Explore!
Each shape connects to the next: C→A→G→E→D→C (cycle continues!)
🎹 Extended Chords
Add 7th, 9th, 11th, and 13th intervals to any chord!
Select Base Chord:
+
Add Extensions:
Current Chord:
C Major
C - E - G
Select a base chord and click the extension buttons above to build complex chords!
🎵 Quick Extended Chords (Click to Hear!)
Cmaj7
C-E-G-B
C7
C-E-G-A#
Cmaj9
C-E-G-B-D
C9
C-E-G-A#-D
Gmaj7
G-B-D-F#
Gmaj9
G-B-D-F#-A
Am7
A-C-E-G
Am9
A-C-E-G-B
Type 3+ Notes
...
Enter notes to identify chord
📚 How It Works:
1. A chord is 3 or more notes played together
2. Type any notes (like "GBD" or "C E G") in the box above
3. Watch the circle light up showing exactly which notes you typed
4. See the chord name appear in the center
5. Click Play to hear - notes ascend smoothly through octaves!

🎵 Octave Magic: When you type "GBD", you hear G→B→D going UP smoothly! The tool automatically adjusts octaves so notes never jump down - just like playing a scale!

🎯 Educational Value: This teaches you that chords are just combinations of notes! Every chord you know (G Major, C Major, Am, etc.) is simply 3+ specific notes played together.