Voicing of F# Major 7

Rooted I

Back to F#maj7

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Left hand
F#2A#2C#3E#3
Family
4-Note Rooted

The Rooted I voicing of F#maj7 stacks F#, A#, C# and E# from the bottom up: the root, major 3rd, 5th and major 7th of the chord.

It's one of the 4-Note Rooted voicings: four-note voicings with the root on the bottom or inside, in the left hand. The other for F#maj7 is Rooted II.