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 C sharp

Sheet music of C Major in three octaves (3)

Sheet music of C Major in three octaves (2)

C sharp Major

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

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C sharp 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

C sharp 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

C sharp Major seventh

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

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Sheet music of C Augmented in three octaves (3)

C sharp 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

C sharp Dominant ninth

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

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	Aliases
C sharp Major	M, ^, , maj	Beginner
C sharp Dominant ninth	9	Beginner
C sharp Minor	m, min, -	Beginner
C sharp Augmented	aug, +, +5, ^#5	Beginner
C sharp Major seventh	maj7, Δ, ma7, M7, Maj7, ^7	Beginner
C sharp Minor seventh	m7, min7, mi7, -7	Beginner
C sharp Fifth	5	Beginner
C sharp Dominant seventh	7, dom	Beginner
C sharp Altered seventh	alt7	Easy
C sharp Diminished	dim, °, o	Easy
C sharp Dominant ninth sharp eleventh	9#11, 9+4, 9#4	Easy
C sharp Major sixth	6, add6, add13, M6	Easy
C sharp Minor major seventh	m/ma7, m/maj7, mM7, mMaj7, m/M7, -Δ7, mΔ, -^7, -maj7	Easy
C sharp Minor sixth	m6, -6	Easy
C sharp Major ninth	maj9, Δ9, ^9	Easy
C sharp Minor seventh add eleventh	m7add11, m7add4	Easy
C sharp Minor seventh flat fifth	m7b5, ø, -7b5, h7, h	Easy
C sharp Minor ninth	m9, -9	Easy
C sharp Dominant ninth flat fifth	9b5	Easy
C sharp Minor add ninth	madd9	Easy
C sharp Dominant ninth suspended fourth	9sus4, 9sus	Easy
C sharp Major seventh suspended fourth	M7sus4	Easy
C sharp Major ninth suspended fourth	M9sus4	Easy
C sharp Major ninth flat fifth	M9b5	Easy
C sharp Minor ninth flat fifth	m9b5	Easy
C sharp Dominant eleventh	11	Easy
C sharp Dominant thirteenth no fifth	13no5	Easy
C sharp Sixth add ninth	6add9, 6/9, 69, M69	Easy
C sharp Diminished seventh	dim7, °7, o7	Easy
C sharp Minor eleventh	m11, -11	Easy
C sharp Major thirteenth	maj13, Maj13, ^13	Easy
C sharp Dominant seventh no fifth	7no5	Intermediate
C sharp Dominant ninth sharp fifth	9#5, 9+	Intermediate
C sharp Dominant ninth sharp fifth sharp eleventh	9#5#11	Intermediate
C sharp Ninth no fifth	9no5	Intermediate
C sharp Major sixth sharp eleventh	M6#11, M6b5, 6#11, 6b5	Intermediate
C sharp Minor ninth sharp fifth	m9#5	Intermediate
C sharp Dominant thirteenth	13	Intermediate
C sharp Major seventh flat fifth	M7b5	Intermediate
C sharp Major add ninth	Madd9, 2, add9, add2	Intermediate
C sharp Major ninth sharp fifth	maj9#5, Maj9#5	Intermediate
C sharp Dominant seventh flat sixth	7b6	Intermediate
C sharp Major seventh flat sixth	M7b6, ^7b6	Intermediate
C sharp Minor sharp fifth	m#5, -#5, m+	Intermediate
C sharp Dominant seventh sharp eleventh	7#11, 7#4	Intermediate
C sharp Dominant seventh flat ninth	7b9	Intermediate
C sharp Major sharp fourth	maj#4, Δ#4, Δ#11, M7#11, ^7#11, maj7#11	Intermediate
C sharp Minor add fourth	madd4	Intermediate
C sharp Dominant ninth flat thirteenth	9b13	Intermediate
C sharp Fourth	4, quartal	Intermediate
C sharp 69 sharp 11	69#11	Intermediate
C sharp Dominant seventh sharp eleventh flat thirteenth	7#11b13, 7b5b13	Intermediate
C sharp Dominant seventh flat thirteenth	7b13	Intermediate
C sharp Major seventh flat ninth	M7b9	Intermediate
C sharp Minor six-nine	m69, -69	Intermediate
C sharp Minor eleventh augmented	m11A	Intermediate
C sharp Dominant ninth sharp eleventh flat thirteenth	9#11b13, 9b5b13	Expert
C sharp Dominant thirteenth suspended fourth	13sus4, 13sus	Expert
C sharp Dominant seventh sharp ninth	7#9	Expert
C sharp Dominant seventh add sixth	7add6, 67, 7add13	Expert
C sharp Major thirteenth sharp eleventh	M13#11, maj13#11, M13+4, M13#4	Expert
C sharp Dominant seventh sharp ninth sharp eleventh	7#9#11, 7b5#9, 7#9b5	Expert
C sharp Minor thirteenth	m13, -13	Expert
C sharp Augmented add sharp ninth	+add#9	Expert
C sharp Seventh suspension four	7sus4, 7sus	Expert
C sharp Major ninth sharp eleventh	maj9#11, Δ9#11, ^9#11	Expert
C sharp Dominant thirteenth sharp ninth	13#9	Expert
C sharp Dominant seventh flat ninth sharp eleventh	7b9#11, 7b5b9, 7b9b5	Expert
C sharp Dominant thirteenth sharp eleventh	13#11, 13+4, 13#4	Expert
C sharp Dominant seventh sharp fifth sharp ninth	7#5#9, 7#9#5, 7alt	Expert
C sharp Dominant seventh sharp fifth flat ninth	7#5b9, 7b9#5	Expert
C sharp Dominant thirteenth flat fifth	13b5	Expert
C sharp Dominant thirteenth flat ninth	13b9	Expert
C sharp Dominant seventh sharp fifth suspended fourth	7#5sus4	Expert
C sharp Major seventh add thirteenth	M7add13	Expert
C sharp Major seventh sharp fifth	maj7#5, maj7+5, +maj7, ^7#5	Expert
C sharp Major seventh sharp ninth sharp eleventh	maj7#9#11	Expert
C sharp Dominant eleventh flat ninth	11b9	Expert
C sharp Dominant seventh flat fifth	7b5	Expert
C sharp Minor seventh sharp fifth	m7#5	Expert
C sharp Dominant thirteenth sharp ninth sharp eleventh	13#9#11	Guru
C sharp Dominant thirteenth flat ninth sharp eleventh	13b9#11	Guru
C sharp Dominant seventh sharp fifth	7#5, +7, 7+, 7aug, aug7	Guru
C sharp Minor major ninth	mM9, mMaj9, -^9	Guru
C sharp Dominant seventh sharp ninth flat thirteenth	7#9b13	Guru
C sharp Dominant seventh sharp fifth flat ninth sharp eleventh	7#5b9#11	Guru
C sharp Major flat fifth	Mb5	Guru
C sharp Dominant seventh sharp ninth sharp eleventh flat thirteenth	7#9#11b13	Guru
C sharp Dominant seventh flat ninth sharp ninth	7b9#9	Guru
C sharp Dominant seventh flat ninth flat thirteenth	7b9b13	Guru
C sharp Major add flat ninth	Maddb9	Guru
C sharp Dominant seventh flat ninth flat thirteenth sharp eleventh	7b9b13#11, 7b9#11b13, 7b5b9b13	Guru
C sharp Dominant seventh suspended fourth flat ninth flat thirteenth	7sus4b9b13, 7b9b13sus4	Guru
C sharp Major sharp fifth add ninth	M#5add9, +add9	Guru
C sharp Major seventh sharp fifth suspended fourth	M7#5sus4	Guru
C sharp Major ninth sharp fifth suspended fourth	M9#5sus4	Guru
C sharp suspended fourth flat ninth	b9sus, phryg, 7b9sus, 7b9sus4	Guru
C sharp Minor major seventh flat sixth	mMaj7b6	Guru
C sharp Minor major ninth flat sixth	mMaj9b6	Guru
C sharp 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.