How do I find a chord in a specific key?

Choose your tonic, then search or filter the chord list to open a chord details page with diagrams and interval information.

What can I use the chord library for?

Use the chord library as a quick reference for chord names, aliases, and practical details before practice, songwriting, or arrangement.

Chord Library - Select a chord

Find new chords in the extensive chord library. Examples on how to construct and play nearly any chord you can think of are included in the pages. You will also find cheat sheets with sheet music, piano chords and guitar chords in any key.

Quick-select chord families

Major Minor Dominant 7 Diminished Augmented Suspended

Featured chords in D

C Major - Sheetmusic Chord - Treble clef

D Major

Major triad (1-3-5); stable tonic color and foundation of tonal harmony.

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D Minor

Minor triad (1–♭3–5); stable minor color, relative to major by lowering the third.

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Guitar voicing #4 of the C Minor seventh chord

D Minor seventh

Minor seventh (1–♭3–5–♭7): the everyday minor-seventh stack behind ii7, i7 vamps, and R&B shells—not the major-seventh minor color of mM7.

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Guitar voicing #1 of the C Major seventh chord

D Major seventh

Major seventh (1–3–5–7); stable major color with leading-tone pull to the octave.

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C Augmented - Sheetmusic Chord - Alto clef

D Augmented

Augmented triad (1–3–♯5); symmetric stacks and whole-tone color.

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Guitar voicing #2 of the C Dominant ninth chord

D Dominant ninth

Dominant seventh with added ninth; richer dominant tension that still resolves strongly to tonic.

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	Aliases
D Major	M, ^, , maj	Beginner
D Major seventh	maj7, Δ, ma7, M7, Maj7, ^7	Beginner
D Major sixth	6, add6, add13, M6	Easy
D Minor major seventh	m/ma7, m/maj7, mM7, mMaj7, m/M7, -Δ7, mΔ, -^7, -maj7	Easy
D Major ninth	maj9, Δ9, ^9	Easy
D Major seventh suspended fourth	M7sus4	Easy
D Major ninth suspended fourth	M9sus4	Easy
D Major ninth flat fifth	M9b5	Easy
D Major thirteenth	maj13, Maj13, ^13	Easy
D Major sixth sharp eleventh	M6#11, M6b5, 6#11, 6b5	Intermediate
D Major seventh flat fifth	M7b5	Intermediate
D Major add ninth	Madd9, 2, add9, add2	Intermediate
D Major ninth sharp fifth	maj9#5, Maj9#5	Intermediate
D Major seventh flat sixth	M7b6, ^7b6	Intermediate
D Major sharp fourth	maj#4, Δ#4, Δ#11, M7#11, ^7#11, maj7#11	Intermediate
D Major seventh flat ninth	M7b9	Intermediate
D Major thirteenth sharp eleventh	M13#11, maj13#11, M13+4, M13#4	Expert
D Major ninth sharp eleventh	maj9#11, Δ9#11, ^9#11	Expert
D Major seventh add thirteenth	M7add13	Expert
D Major seventh sharp fifth	maj7#5, maj7+5, +maj7, ^7#5	Expert
D Major seventh sharp ninth sharp eleventh	maj7#9#11	Expert
D Minor major ninth	mM9, mMaj9, -^9	Guru
D Major flat fifth	Mb5	Guru
D Major add flat ninth	Maddb9	Guru
D Major sharp fifth add ninth	M#5add9, +add9	Guru
D Major seventh sharp fifth suspended fourth	M7#5sus4	Guru
D Major ninth sharp fifth suspended fourth	M9#5sus4	Guru
D Minor major seventh flat sixth	mMaj7b6	Guru
D Minor major ninth flat sixth	mMaj9b6	Guru
D Minor flat sixth major seventh	mb6M7	Guru

Chord library for practical music theory and harmony

Use this chord library to study chord formulas, chord quality, inversions, extensions, and common aliases in every key. Each chord page helps you understand the intervals and notes inside the chord so you can apply harmony with confidence.

Start with essential triads and seventh chords, then continue into altered and extended harmony for songwriting, improvisation, and arranging. For a complete workflow, combine this library with the scale libraryand the interval guideto hear how harmony and melody connect in real music.