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This chord progression from the verse of Tame Impala’s “Alter Ego” suggests a key of C major due to the recurring instances of Cmaj7. However, the presence of certain chords like Bm7 and Dm suggests that Kevin Parker is creatively “borrowing” chords from the parallel and associated keys (C minor, D minor) to create colorful departures from the primary tonality. The use of extended chords (7ths) and suspended chords (Bsus4) adds a sense of complexity and sophistication to the harmony. As can be seen, the chord progression mostly oscillates between Cmaj7, Bsus4, Bm7 before moving to Dm and Gm towards the end of the verse.

“Feels Like We Only Go Backwards” by Tame Impala is a psychedelic pop song notable for its dreamy, lo-fi sound and use of unconventional chord progressions. Musically, the song is written in the key of F major, but creatively uses chromatic mediants, borrowed chords, and modal interchange to establish a unique harmony. The song also uses dynamic contrast to create a dreamlike atmosphere, increasing the song’s overall psychedelic effect.

“Idioteque” by Radiohead is an experimental and atmospheric electronic song, released on the album “Kid A” in 2000. The chord progression of the chorus is fairly simple, yet features some distinctive chords which create a sense of tension and release. It incorporates modal mixture and chromatic mediants, which are typical elements found in Radiohead’s music.

The key of ‘Take Me Home, Country Roads’ is G Major, a common key for pop and country songs which provides a bright and uplifting sound. Throughout the song, only four different chords are used: G, D, Em and C. The progression is repeated consistently, with only the sudden introduction of an F major chord (borrowed from the parallel minor of G) towards the end of the song during a transition phase.

Muse’s “Can’t Take My Eyes Off You” is a rock interpretation of the classic 1967 pop song “Can’t Take My Eyes Off You” by Frankie Valli, which has been covered by various artists in different styles. The chord progression of the chorus is characterized by a series of diatonic chords, predominant in Western pop music. This progression follows a typical 1950’s “doowop” pattern present in countless pop and rock songs, utilizing the familiar circle of fourths movement (Dm-G-C) and establishing a straightforward harmonic rhythm.

Chord Progression Analysis with Roman Numerals (borrowed chords in code block):

D minor (iv) – G major (VII) – C major (I) – A minor (vi) – D minor (iv) – G major (VII) – C major (I) – A major (V/vi) – D minor (iv) – G major (VII) – C major (I) – A minor (vi) – D minor (iv) – G major (VII) – C major 7 (Imaj7) – C7 (I7) – C6 (I6) – C major (I) – Ab major (*bVI) – C major (I)

`* Ab major (bVI) is a borrowed chord from the parallel minor key (C minor).`

Tame Impala – Alter Ego – Chorus

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Chord Progression

[‘Am’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘E’, ‘A’, ‘G’, ‘Fmaj7’, ‘Cmaj7’, ‘Bsus4’, ‘Bm7’]

Chord Progression Analysis

– ‘Am’ (i)
– ‘Fmaj7’ (VI)
– ‘Em’ (v)
– ‘Fmaj7’ (VI)
– ‘Em’ (v)
– ‘Fmaj7’ (VI)
– ‘Em’ (v)
– ‘Fmaj7’ (VI)
– ‘Em’ (v)
– ‘Fmaj7’ (VI)
– ‘E’ (V)
– ‘A’ (IV/ii – borrowed from A major)
– ‘G’ (bVII – borrowed from A major)
– ‘Fmaj7’ (VI)
– ‘Cmaj7’ (III – borrowed from A major)
– ‘Bsus4’ (ii, suspending the 3rd)
– ‘Bm7’ (ii)

“`
Borrowed Chords: ‘A’ (IV/ii), ‘G’ (bVII), ‘Cmaj7’ (III)
“`

Similar Chord Progressions

– “Because” by The Beatles has a similar use of a pattern of chords in the choruses, cycling between Emaj7, C#m, Cm, G#m, and G#m7.

– “Breathe” by Pink Floyd has a similar vibe with a revolving chord progression alternating between Bm7, A(add9), and Gmaj.

– “Marquee Moon” by Television presents a psychedelic sound with a similar vibe, the chord progression alternates between F#m, Emaj7, Dmaj7, C#m, Bm7, and Amaj7.

Bear in mind, none of these songs perfectly match ‘Alter Ego’, but they might have inspired aspects of it.

Musical Analysis

The progression starts with an ‘Am’ (i) and continuously alternates between ‘Fmaj7’ (VI) and ‘Em’ (v) chords for 9 times. This gives the feeling of suspension and tension, pairing well with the psychedelic rock genre. The pattern breaks at the ‘E’ (V) major chord, providing some predictable resolution. We then have a deceptive cadence with the ‘A’ (IV in A major) and ‘G’ (bVII in A major). The usage of ‘Cmaj7’ (III) and ‘Bsus4’ to ‘Bm7’ is similarly notable as these chords fall outside of the normal.

Overall Analysis

This chord progression is in the key of Am. The work can be seen as a mix of the Western tonal harmony, incorporating the use of inversions alongside nondiatonic chords. Tame Impala employs the elements of neo-psychedelia with unique chord progressions and arrangements. The alteration between two chords creates a revolving feeling, reinforcing the title “alter ego”.

Style Analysis

Tame Impala is known for their fusion of classic psychedelic rock with modern synthesized sounds, and ‘Alter Ego’ is no exception. The Meandering progression contributes to a “dream-like” state, matched with ethereal synth and guitar tones, harkening back to late ’60s and early ’70s influences like Pink Floyd. But there’s also a frequent incorporation of more modern sounds and effects that bring the music to the present. This track might also reflect the influence of jazz, notable in the usage of the maj7, m7, and sus4 extended chords.

Chords in the Chorus section of Alter Ego by Tame Impala are:

[‘Am’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘Em’, ‘Fmaj7’, ‘E’, ‘A’, ‘G’, ‘Fmaj7’, ‘Cmaj7’, ‘Bsus4’, ‘Bm7’]