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A Minor Add 9

chord·/chords/minor-add-9th/a/

The A Minor Add 9 chord contains the notes A, B, C, and E.

Notes: A, B, C, E · Piano keys: A B C E

Reviewed for accuracy · Last updated July 2026 · Maintained by Justin Evans

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A
A – B – C – E

Practice A Minor Add 9

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Introduction

The A Minor Add 9 chord is a four-note chord made up of A, B, C, and E.

Notes

Notes:A – B – C – E

Key Signature

A chord has no key signature of its own, but the A Minor Add 9 is the tonic (i) chord of A Minor, which shares the signature of its relative major, C Major — no sharps or flats.

Chords in the Key of A Minor

These are the triads built on each degree of the A minor scale:

C1C2C3C4ACEC6C7C8
i — A Minor (minor)
DegreeNumeralChordQuality
1iA MinorMinor
2ii°B DiminishedDiminished
3IIIC MajorMajor
4ivD MinorMinor
5vE MinorMinor
6VIF MajorMajor
7VIIG MajorMajor

A Minor Add 9 — Frequently Asked Questions

What is the A Minor Add 9 chord on piano?
The A Minor Add 9 chord contains the notes A – B – C – E. On piano, play these notes together to sound the chord.

Related Tools

Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.

References & Further Reading

The note names, intervals, fingering, and harmony on this chord page are grounded in the following sources. Public domain treatises and scores are linked to their full text; primary data reflects piano.org's own interval-derived dataset.

  1. 1

    Jadassohn, Salomon(1883)

    A Manual of Harmony

    Public domain treatise
  2. 2

    Prout, Ebenezer(1889)

    Harmony: Its Theory and Practice

    Public domain treatise
  3. 3

    Beethoven, Ludwig van(1810)

    Für Elise, WoO 59 (A minor)

    Public domain score
  4. 4

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