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“It’s A Fire” by Portishead is a song characterized by its frequent modulations and use of borrowed chords, making it a considerable complexity in terms of harmony. It features transition from key centers and borrowed chords from other keys, which creates tension and resolution creating the signature moody and intense atmosphere Portishead is known for.

“Roads” by Portishead is set in the key of Am, also known as A minor. In the verse, there is an interesting use of the flat major 7 (Fmaj7) chord. This chord is not typically found within the natural minor key but is considered a borrowed chord from the A major key. Thus, this use of said borrowed chord and its resolution to the E7 dominants gives the song a unique feel, contributing to its mesmerizing and emotive ambience. Portishead tends to blend the use of A minor and A Dorian modality in their music, especially apparent in this composition.

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“With a Little Help from My Friends” is a song by the Beatles from their 1967 album ‘Sgt. Pepper’s Lonely Hearts Club Band’. It features Ringo Starr who sings the song in the role of ‘Billy Shears’, a fictional character from the ‘Sgt. Pepper’ album. It was composed by Paul McCartney and John Lennon.

The full chord sequence you provided represents the verse. The song itself is predominantly in E Major, but contains several borrowed chords and modal exchanges. As was common with Beatles’s compositions, they often incorporated intricate chord progressions and did not strictly adhere to traditional key signatures.

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The verse of “Megalomania” by Muse is characterized by distinctive harmonic progressions, dynamic contrasts, and notable melodic lines that are typical of the band’s alternative rock style. Throughout this verse, Muse uses common harmonic devices such as secondary dominants, diatonic and chromatic mediants, borrowed chords from parallel keys, and deceptive cadences to create a sense of tension and forward momentum.

“All My Loving” by the Beatles is a great example of their early ’60s pop style. This song’s verse chord progression is in the key of D Major with a mix of minor chords and 7th chords that add to the emotional intensity of the song. The composition blends pop simplicity with complex harmony, encapsulating the Beatles’ innovative songwriting.

Portishead – Its A Fire – Verse 1

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Chord Progression

[‘Gsus4’, ‘G’, ‘Bm’, ‘D’, ‘F’, ‘Gsus4’, ‘G’, ‘Em’, ‘G’, ‘Em’, ‘G’, ‘F’, ‘E’]

Chord Progression Analysis

Chord Progression: [‘Gsus4’, ‘G’, ‘Bm’, ‘D’, ‘F’, ‘Gsus4’, ‘G’, ‘Em’, ‘G’, ‘Em’, ‘G’, ‘F’, ‘E’]

Translating chords to Roman Numerals (Assuming G Major as our key):

Gsus4 (Isus4)
G (I)
Bm (iii)
D (V)
F (♭VII / a borrowed chord from G minor)
Gsus4 (Isus4)
G (I)
Em (vi)
G (I)
Em (vi)
G (I)
F (♭VII / a borrowed chord from G minor)
E (vi / a borrowed chord from G minor)

“`
Full Chord name (‘Roman Numeral)
Gsus4 (Isus4)
G (I)
Bm (iii)
D (V)
F (♭VII)
Gsus4 (Isus4)
G (I)
Em (vi)
G (I)
Em (vi)
G (I)
F (♭VII)
E (VII)
“`

Similar Chord Progressions

The chromaticism and complex harmonic structures in “It’s A Fire” bear similarities to those found in many works of Radiohead, especially “Paranoid Android,” and in some of the darker pieces of David Bowie such as “Life on Mars.”

Radiohead – Paranoid Android:
[‘Em’, ‘G’, ‘B’, ‘D’, ‘C’, ‘F#’, ‘Em’, ‘G’, ‘Am’, ‘Em’, ‘G’, ‘Am’, ‘C’, ‘B’]

David Bowie – Life on Mars:
[‘F’, ‘Em’, ‘Dm’, ‘F’, ‘G’, ‘Bb’, ‘Am’, ‘Bb’, ‘Dm’, ‘Em’, ‘A’, ‘Dm’, ‘Em’, ‘F’].

Note: For the purpose of this analysis, assume that these songs are in the keys of E minor and F major, respectively.

Musical Analysis

The use of suspended chords and borrowed chords in this song suggests a sense of emotional ambiguity, shifting between tension and release. Additionally, the resolution from Gsus4 to G creates a tension-release pattern that gives a color characteristic of Portishead’s style.

Overall Analysis

The song “It’s A Fire” by Portishead features complex harmonic structures, distinguished by a fusion of pop, rock, and elements of jazz harmonies. The band, known for their trip-hop style, employ chromatically richer harmony and non-diatonic chord progressions in this piece. The chord progression of ‘It’s A Fire’ is consistent with this approach as we see the frequent use of suspended and minor chords alongside major ones, which creates a sense of unresolved tension. Borrowed chords, usually taken from the parallel minor or major key, are also used frequently to add stylistic color to the harmony.

Style Analysis

Portishead is known for their unique fusion of electronic music, hip hop beats, and jazz elements, a style often referred to as trip hop. Their use of complex chord structures, borrowed chords, and non-diatonic harmonies is consistent with the genre’s mood-setting characteristics, offering an intricate texture and emotional depth that’s distinguishing of their style.

Chords in the Verse 1 section of Its A Fire by Portishead are:

[‘Gsus4’, ‘G’, ‘Bm’, ‘D’, ‘F’, ‘Gsus4’, ‘G’, ‘Em’, ‘G’, ‘Em’, ‘G’, ‘F’, ‘E’]