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Related Music Theory Alchemy

The given chord progression is from the verse of Pink Floyd’s “Breathe,” a song from their 1973 album, “The Dark Side of the Moon.” The progression consists of alternating Em and A7 chords throughout the entire verse. This creates a sense of movement and tension between the chords while also being relatively simple and repetitive. The harmonic back-and-forth between these two chords gives the song a dreamy and immersive quality that is a signature sound of Pink Floyd’s style.

“Comfortably Numb” is a song by Pink Floyd from their 1979 album, The Wall. It is written in the key of D major and has a slow, dreamy tempo. The second verse of the song features a chord progression that is a blend of major and minor chords, giving the song a sense of melancholy mixed with a calming atmosphere. It also deviates from the typical pop/rock chord progressions, signifying Pink Floyd’s distinct sound and innovative use of harmony.

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Given by the chords you’ve provided, it appears the song “Today” by The Smashing Pumpkins is primarily in the key of D Major with occasional borrowed chords from D minor and E minor. The varying uses of D Major, D minor, and E minor really showcase the variety in Billy Corgan’s guitar writing.

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The song, “Sour Times” by Portishead, is in the key of C# minor. The chord progression of the chorus that you’ve provided swings between three chords (F#m7, Emaj7, D#7) four times before ending on a C#m chord. It suggests a II – I – VII progression in the chorus, which is rare and distinctive in contemporary music genres. This choice of chord progression creates a mysterious, dark, and contemplative mood, characteristic of the trip-hop genre that Portishead propounds.

“Hurt” is a song written and composed by Trent Reznor, best known for its version covered by Johnny Cash in C major. The song employs a commonly used pop/rock chord progression (vi- IV- I- V), that aids the conveyance of the theme of regret and redemption. The use of the minor vi chord (Am) as the starting point of the progression provides a very melancholy feel that aligns with the overall tone of regret in the lyrics. The progression then moves to a major IV (F), suggestive of a brief glimpse of hope or relief, before settling into the home key of C. The progression rounds off with a V chord (G), propelling the sequence back to the beginning again, giving a cyclic, repeating, and enduring feel to the music.

Pink Floyd – Breathe – Chorus 2

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Chord Progression

Cmaj7, Bm7, Fmaj7, G, D7#9, D7b9, Em

Chord Progression Analysis

Cmaj7 (I), Bm7 (bVII), Fmaj7 (IV), G (V), D7#9 (V/vi), D7b9 (V/vi), Em (vi)

Borrowed Chords:
Bm7 (bVII)

Similar Chord Progressions

1. Steely Dan – Deacon Blues:
Am7 (i), Bbmaj7 (bII), Gm7 (vii), C7 (III), Fmaj7 (VI), Dm7 (iv), E7b9 (V/II), A7b9 (V/i)

2. Radiohead – Paranoid Android:
Gmaj7 (I), F#m7 (vii), Cmaj7 (IV), Bm7 (iii), Em7 (vi), F#7#9 (V/vii), F#7b9 (V/vii), Gmaj7 (I)

Musical Analysis

The chorus begins with a Cmaj7 chord (I) which establishes the tonality. The progression then moves to Bm7 (bVII), which is a borrowed chord from the parallel minor key (C minor). This serves to add an unexpected twist to the progression and enhances the dreamy atmosphere. Next, the Fmaj7 (IV) chord creates a sense of returning to stability but quickly moves to G (V), temporarily increasing tension. The following chords, D7#9 and D7b9, are both secondary dominant chords of the vi (Em), featuring different alterations of the 9th. This adds harmonic interest and unpredictability leading to the resolution to Em (vi), which brings the progression to its conclusion.

Overall Analysis

The chorus of the Pink Floyd song “Breathe” features a mixture of diatonic and non-diatonic chords and creates a dreamy, spaced-out mood. The combination of major and minor seventh chords, as well as dominant 7th chords with altered 9ths, contributes to this atmospheric quality.

Style Analysis

The use of the major 7ths, minor 7ths, and altered dominant 7ths in this progression is characteristic of the psychedelic rock and progressive rock styles popular in the 1970s. Pink Floyd was known for pushing the boundaries of traditional songwriting, often experimenting with chords, textures, and sounds while maintaining a strong sense of melody.

Chords in the Chorus 2 section of Breathe by Pink Floyd are:

Cmaj7, Bm7, Fmaj7, G, D7#9, D7b9, Em