Chords » A Minor 2nd (1st inversion)

Symbols:Am2/B, Amin2/B, Amadd2/B
Scale Degree Formula:1-♭2-4-♭7
Interval Stack:m2 + M3 + P4
Notes:B, C, E, A
Hear this chord:▸ Guitar
Inversion of:A Minor 2nd

Construction

This chord is an inversion of the A Minor 2nd chord, so construction is a little different from standard chords. An inversion is the same as the base version of a chord, though its notes are played in a different order. For this inversion, you'll start with the notes of the base chord (A, B, C, E), then count 1 to the right to find the lowest note of this chord (B). The rest of the notes to the right of this continue this chord, and then we 'wrap around' to the beginning, until we have reached our new first note. After all of this, we end up with the final notes for this inversion: B, C, E, A.
You can also use the more traditional methods described below, though you'll need to start from the lowest note as described above to find your starting point. The scale degree and interval stack listed above are from the perspective of this interval, so they'll produce the same notes as the base chord, but in the order required by this inversion.
Using the scale degree formula, we first start with the B major scale, and number each note in the scale starting from 1 - these are the scale degrees. Next, we use the scale degree formula, in this case 1-♭2-4-♭7, to select notes from our enumerated scale. When a chord requires notes that are not in the scale, this is indicated with a flat (♭) or a sharp (#) along with the scale degree; a ♭3, for instance, would be one half-step down from the 3rd scale degree.
Alternatively, we can use the interval stack to construct our chord. With this approach, we first start with the lowest note of the chord (B), then move our first interval (m2), which brings us to our second note in the chord (C). We repeatedly apply each of the remaining intervals in the stack to get the full list of notes for our chord.
The diagram below shows how both the scale degree formula and interval stack methods result in the same selection of notes:
B1C♭2C#2D♭3D#3E4F♭5F#5G#5G#6A♭7m2M3P4

Similar Chords

The following chords are similar to this chord and may be a suitable replacement in certain scenarios.

Chord TypeChords
7th Suspended Four Flat 9thB7sus4b9
7th Suspended FourthE7sus, B7sus
7th Suspended SecondD7sus2, A7sus2
Added 9thAadd9
Augmented Major 7thC+Maj7
Half-Diminished 7thF#m7(b5)
Major 2ndA2
Major 6thCM6
Major 7thFM7, CM7
Major 7th Flat FifthFMaj7b5, CMaj7b5
Major Added 11thEadd11
MinorAm
Minor 2ndAm2
Minor 6thAm6
Minor 7thAm7
Minor 9thAm9
Minor Added 11thEmadd11, Amadd11
Minor Added 9thAmadd9
Minor Major 7thAmM7
Minor Major 9thAmMaj9
Minor Six-NineAm6/9
Suspended FourthEsus
Suspended SecondAsus2

Associated Scales

This chord can be found in the following scales.

ScaleRoots
BluesF#
DorianA, D
Dorian b5F#
Harmonic MajorE
Harmonic MinorA, E
Ionian #5G, C
LocrianF#, B
Locrian bb7D#
Locrian ♮6F#, B
LydianF, C
Lydian #9F, C
Lydian Augmented #2C
Lydian b3A
MajorG, C
MinorA, E
MixolydianG, D
Mixolydian b2B
PhrygianE, B
Phrygian DominantE, B
Phrygian b4G#
Super-Locrian bb7G#, D#
Ukrainian DorianA, D

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