Labs

Piano Chord Theory Lab

Explore chord construction, horizontal keyboard relationships, two-hand voicings, inversions, and melodic scale choices.

Explore

Chord symbol

Try
CEGBCEGBCEGBCEGBC

Harmony map

Circle of fifths

Cmaj7
Circle of fifths for Cmaj7C is the root. Highlighted positions are notes in Cmaj7.CROOTCGDAEBF♯ / G♭D♭ / C♯A♭ / G♯E♭ / D♯B♭ / A♯F

Chord anatomy

Cmaj7

major seventh
Root
C
Quality
Major
Bass
C
Third
Present
Formula
1357
RootC1P · 1
ThirdE3M · 3
FifthG5P · 5
SeventhB7M · 7

Piano voicings

Choose a two-hand position

Blue notes are assigned to the left hand; rose notes are assigned to the right hand.

Melody

Horizontal keyboard paths

Each path begins on the lowest available root, travels upward, then returns through the full keyboard range.
Pentatonic pathC major pentatonic · eighth notes at 80 BPM
CDEGACDEGACDEGAC
Diatonic pathC major · eighth notes at 80 BPM
CDEFGABCDEFGABCDEFGABC