C major (ionian) The major scale is the most common scale in all of western music. All of western music is built around the major scale and described in terms of it. The white keys on a piano starting from C are the C major scale. Notes C, D, E, F, G, A, B Diatonic Triads C Dm Em F G Am BdimDiatonic 7ths Cmaj7 Dm7 Em7 Fmaj7 G7 Am7 Bm7 ♭5Diatonic 9ths Cmaj9 Dm9 Em7 ♭9 Fmaj9 G9 Am9 Bm7 ♭5 ♭9Diatonic 11ths Cmaj11 Dm11 Em11 ♭9 Fmaj9 ♯11 G11 Am11 Bm11 ♭5 ♭9Diatonic 13ths Cmaj13 Dm13 Em11 ♭9 ♭13 Fmaj13 ♯11 G13 Am11 ♭13 Bm11 ♭5 ♭9 ♭13