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Music theory, Let It Be, track 7

Maggie Mae

The Beatles · from Let It Be (Jan 1969) · traditional, arranged by the group

A study in the four-chord Liverpool folk fragment.
A 40-second snippet of a traditional Liverpool sea shanty, cycling G, C, D, and Am in G major, with the Am (2m) as a single non-tonic-chord passing color.

Key G major Chords G, C, D, Am (1, 4, 5, 2m) Form traditional folk snippet Length ~40 seconds

Maggie Mae, plain words

This is a very short traditional Liverpool folk song the Beatles played, in a home key of G major.

It uses only four chords: home (G), the two friendliest neighbors (C and D), and one sadder cousin (Am).

By the numbers those are 1, 4, 5, and 2m.

The song lasts less than a minute and is not by the Beatles at all; it is an old sailor song from Liverpool that they included as a tip of the hat to home.

Because the harmony is so simple, all the interest comes from the accent and the roll of the singing.

To see the exact chords and key, open Pollack or Isophonics.

How to read this page. The chords below are from a public transcription, in G major.
Maggie Mae is a traditional Liverpool song, not a Beatles composition, included on the album as a short album interlude.

The theory

Key & tonal center

A plain G major

The fragment stays in G major throughout with no modulation and no borrowed chord.
Its harmonic vocabulary is the smallest sensible palette for a folk song: the tonic, its two primary neighbors, and the relative minor.

The chord palette

Only four chords, all diatonic

The whole song uses G (1), C (4), D (5), and Am (2m).
Three of those are the primary triads of the key (1, 4, 5), and Am serves as a single non-tonic-chord passing color, giving the phrase a brief shadow before the return to home.

Cadence

Plain V to I closes

Each phrase ends on D moving to G, a clean authentic V to I cadence, the folk singer's most direct way to close a line.
There is no plagal touch, no seventh coloring, no substitution; the cadence is bare.

Form

A single verse loop, sung once

The whole album version is one verse of the traditional song, no chorus, no bridge, no repeat.
The form choice is not a design; it is what fits the 40-second window on the record.

Context

Traditional, not composed by the Beatles

Maggie Mae is a traditional Liverpool sea shanty about a prostitute jailed for theft, in the public domain long before the band recorded it.
The album credit is to Lennon, McCartney, Harrison, and Starkey as arrangers of a traditional song, not as authors.

Key analysis

Key: G major (diatonic throughout).
Scale: G A B C D E F#.
DegreeChordNashvilleRoman
1G1I
2Am2mii
3Bm3miii
4C4IV
5D5V
6Em6mvi
7F#°vii°

Nashville numbers

Chords sourced from a public transcription, in G major.

Verse (only section)

1G
4C
1G
5D
1G
4C
2mAm
5D
1G

Reading the numbers: each is a scale degree in G. Plain = major, m = minor. Here the loop is 1-4-1-5-1-4-2m-5-1 (G, C, G, D, G, C, Am, D, G).

Chord fingerings

All four chords (G, C, D, Am) are plain open triads. No diagram needed for this fragment.

Confirm the specifics here

Pollack, "Notes On Maggie Mae"

Prose analysis of the G-major fragment and the folk chord palette.

Open Pollack mirror →

Isophonics, annotations

Downloadable chord and key files (per-album zip that includes Maggie Mae).

Open Isophonics →

HookTheory / TheoryTab

Roman-numeral function and melody, if a community tab exists.

Open the song page →

BeatlesFC

General Beatles harmonic-function paper (not per-song).

Open the paper →
Song 25 of the 1969-forward queue, seventh of Let It Be. Theory only, no production notes.
Chords are from a public transcription; exact bar-by-bar detail is at the linked sources. See the full queue.