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Fig. 1 · C on the keyboard

piano chord

C

C1E3G5

A major third and a perfect fifth over the root.

on guitaron ukulelethe scale

What is true of it

C is C, E and G — 1, 3 and 5 counted from C.

On an instrument that cannot reach all 3, the 5 goes first, in that order.

C in other shapes

CmminorCdimdiminishedCaugaugmentedC5power chordCsus2suspended secondCsus4suspended fourth

C♯D♭DD♯E♭EFF♯all 374