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.
“Sour Times” by Portishead is largely written in the key of C# minor, with elements of modal interchange and chromaticism that contribute to its haunting, dark sound. The song exhibits a remarkable amount of harmonic complexity and non-diatonic harmony, which is a defining characteristic of the trip-hop genre. The piece makes use of intricate inversions and chromatic voice leading, along with a frequent use of sevenths and diminished chords for added tension.
“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.
“Wicked Game” by Chris Isaak utilizes a repetitive three-chord-per-measure progression throughout the song. It is notable for its haunting, melancholic, and mysteriously romantic sound largely because of its repeated progression and very carefully chosen blend of major and minor chords, within the key signature of B minor.
The chord progression in the verse of “Congratulations” by MGMT is an interesting blend of conventional pop and classical harmonies with some use of borrowed chords. The progression features mostly diatonic chords in the key of G major, but there are moments of modal interchange and suspensions that add color and tension to the progression.
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.
“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.
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