Fig. 1 · D major

key signature

D major

D1E2F♯3G4A5B6C♯7

2 sharps, written F♯ C♯

relative: B minor parallel: D minor the scale

The chords that live in it

Ddegree 1 · major Emdegree 2 · minor F♯mdegree 3 · minor Gdegree 4 · major Adegree 5 · major Bmdegree 6 · minor C♯dimdegree 7 · diminished

Built by stacking thirds inside the scale and asking what quality comes out, rather than from a table of roman numerals.

What is true of it

D major has 2 sharps.

They are written in this order, always: F♯ C♯.

Its notes are D, E, F♯, G, A, B and C♯.

Relative: B minor has the same 2 sharps. Parallel: D minor has 1 flat, which is why changing mode changes the signature by three.

Every key

C♭ major G♭ major D♭ major A♭ major E♭ major B♭ major F major C major G major A major E major B major F♯ major C♯ major A♭ minor E♭ minor B♭ minor F minor C minor G minor D minor A minor E minor B minor F♯ minor C♯ minor G♯ minor D♯ minor A♯ minor