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Tomus

Chord reference

Major triad

1 – 3 – 5 · example: C = C – E – G

A major third with a minor third stacked on top. The default, brightest triad.

Written as a formula it is 1 – 3 – 5: the degrees of the major scale it keeps, with any that are altered marked. On C that gives C = C, E, G.

How it is built

  1. G
    third
  2. E
    major
  3. Croot
C stacked from the root upwards, with the interval between each pair of notes.
𝄞CEG
C written out as an arpeggio, lowest note first.
CCDEEFGGABCDE
C on the keyboard, root highlighted.

The intervals above the root

Chord toneInterval above the rootSemitonesNote in C
1Perfect unison0C
3Major third4E
5Perfect fifth7G

Inversions

The same notes can be stacked in any vertical order. The chord keeps its name; what changes is which note is in the bass. See chord inversions for why that matters.

PositionNotesWritten as
Root positionC – E – GC
First inversionE – G – CC/E
Second inversionG – C – EC/G

This chord on every root

RootSymbolNotes
CCC – E – G
D♭D♭D♭ – F – A♭
DDD – F♯ – A
E♭E♭E♭ – G – B♭
EEE – G♯ – B
FFF – A – C
F♯F♯F♯ – A♯ – C♯
GGG – B – D
A♭A♭A♭ – C – E♭
AAA – C♯ – E
B♭B♭B♭ – D – F
BBB – D♯ – F♯
Twelve roots, one shape. The interval pattern above the root never changes.

Nearby chords

All chord types