Voicing of F Major 6

Drop 2 III

Back to F6

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Left hand
F2
Right hand
F3C4D4A4
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Drop 2

The Drop 2 III voicing of F6 stacks F, C, D and A from the bottom up: the root, 5th, 6th and major 3rd of the chord.

It's one of the Drop 2 voicings: four-note chords in close position with the second note from the top dropped an octave, played over the root. The others for F6 are Drop 2 I, Drop 2 II and Drop 2 IV.