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E A D G B E

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Chords in Bb Aeolian

Bb Aeolian is built from the notes Bb, C, Db, Eb, F, Gb and Ab. Its scale carries 5 flats. Harmonising that scale in thirds gives seven chords — 3 majors, 3 minors and 1 diminished — starting on Bbm as the i. The chord on the fifth degree is Fm rather than a major V, so Bb Aeolian has no leading tone and resolves by step and colour instead of by dominant pull — the sound that separates it from a plain Bb major.

Beyond those seven, Bb Aeolian commonly borrows Bb (I), Cm (ii), Dm (iii), Eb (IV) and F (V) from the parallel major — the mixture chords that give a progression somewhere unexpected to go.

The seven chords

iBbmBb minor, open position, capo 0x13321iiøCdimC diminished, open position, capo 0x3454xbIIIDbDb major, position 4, capo 04frx46664ivEbmEb minor, open position, capo 0xx1342vFmF minor, open position, capo 0133111bVIGbGb major, open position, capo 0244322bVIIAbAb major, position 4, capo 04fr466544

Extended to four notes each, the same seven degrees give Bbm7, Cm7b5, Dbmaj7, Ebm7, Fm7, Gbmaj7, Ab7.

Borrowed chords

IBbBb major, open position, capo 0x10331iiCmC minor, open position, capo 0x31013iiiDmD minor, open position, capo 0xx0231IVEbEb major, position 4, capo 04frx65046VFF major, open position, capo 0133211viGmG minor, open position, capo 0310033viiøAdimA diminished, open position, capo 0x0121x
Capo

Capo 6 and play E Aeolian shapes to sound Bb Aeolian.

All eight capo positions for Bb Aeolian →

Related keys

Open Bb Aeolian in the explorer →