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Related Music Theory Alchemy

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.

“Glory Box” by Portishead from the album Dummy (1994) presents a haunting and somewhat melancholy ambience commonly found in their trademark trip-hop style. This song, in particular, draws from a palette of jazz-influenced harmony. The chords used, their extensions, and inversions, conjure complexity beyond basic triadic harmony. The chord progression listed appears to be in the key of D minor and employs common jazz techniques like ii-V-I progressions and usage of the half-diminished chord.

The chord progression in Tyler, The Creator’s “Gone Gone” is a mix of diatonic and non-diatonic chords, making it an interesting and unique progression. It features a combination of major, minor, and an altered seventh chord, adding to the overall complexity of the progression. The style is reminiscent of jazz and R&B, where more complex harmonic structures are often used. Some borrowings from different modes and chromaticism also contribute to its richness and distinct sound.

“In My Head” is a good example of the band’s signature style, combining elements of rock, punk, and alternative music. The usage of primary chords is fairly standard for rock music, but the inclusion of unexpected chords like G5 and D# adds a complex flavor to the progression making it notably unique amongst other songs within the genre.

The chord progression for Radiohead’s “All I Need” chorus features a simple and repetitive structure, with a strong emphasis on the tonic (C major) and its relative minor (E minor). The progression then ends with a brief move to the dominant (G major), before returning to the tonic. This accessible sequence reflects the song’s emotional vulnerability and simplicity, while also showcasing the band’s ability to create emotional depth in their music.

Portishead – Its A Fire – Chorus

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Chord Progression

[‘F#’, ‘C#’, ‘B’, ‘F#’, ‘C#’, ‘B’, ‘F#’, ‘C#’, ‘B’, ‘F#’, ‘C#’]

Chord Progression Analysis

We can say the song is in the key of F# Major, but the presence of chromatically foreign chords suggest a modal interchange behavior, where chords are borrowed from the parallel minor key. Here is the analysis of the chorus:

Chord progression: F# Major (I), C# Major (V), B Major (IV), repeated three times.

By examining the rest of the chords listed in the song, it seems that the verses and bridge sections may incorporate elements of modal interchange, borrowing chords from various modes.

Here is the processed chord progression in Roman Numerals formatted as requested:

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Similar Chord Progressions

In terms of style, the chord progression is a characteristic of Portishead’s affinity for blending elements of electronica, trip-hop, and jazz. Their unique blend of these oh-so-different styles creates an eerie, yet beautiful soundscape. The repeated chord progression in the chorus allows for the vocalist’s melody to weave in and out of the harmony, giving a spectral and ethereal quality to the piece.

Musical Analysis

F# Major (I)
C# Major (V)
B Major (IV)
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Overall Analysis

“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.

Style Analysis

The chord progression F# – C# – B is peculiar and rich, with a traditional sense of movement. The I-V-IV progression provides a strong, familiar sound, with a bit of uniqueness due to the interesting ending on the IV chord.

Together, the chords provide a melancholic and soulful atmosphere. The C# Major chord is particularly striking, demonstrating a modulation or accidental borrowing that heightens the emotive quality of the song. The song makes use of diatonic and non-diatonic chords, creating a rich harmonic landscape.

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

[‘F#’, ‘C#’, ‘B’, ‘F#’, ‘C#’, ‘B’, ‘F#’, ‘C#’, ‘B’, ‘F#’, ‘C#’]