The song “A Day in the Life” by the Beatles is known for its unique and striking musical features. The chord progression in the interlude, in particular, represents an example of the Beatles’ innovative approach to harmonic structure and tonal movement. This section is essentially a sequence of dominant-seventh chords that each resolve to the note a fifth below, a common harmonic progression known as the circle of fifths. The interlude features a prominent orchestral crescendo and transition that are hallmarks of the Beatles’ experimental approach to the use of orchestral instruments in rock music.
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The song, ‘Across the Universe’ by The Beatles is uniquely complex in its melody and chord progression. The song modulates or shifts key but is rooted mainly in D major. The song utilizes the standard rock/pop song structure of Verse, Chorus, and Outro. The unusual facet of this song’s composition is the use of borrowed chords (non-diatonic chords) that add unexpected twists to an otherwise typical chord progression.
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“Something” is composed in C Major; however, it modulates to several different keys. The song’s chord progression is relatively complex and less adherent to traditional tonality, typical of much of The Beatles’ work, particularly in their later years. Throughout the song, they make use of several common progressions, but with a few unique changes.
The progression starts on the suspended II chord of the key, which anticipates resolution either to the tonic (E major) or the supertonic (F# minor). However, it instead moves to the dominant minor (C# minor), suggesting a borrowed chord from the parallel minor (E minor). The D major chord which concludes the progression is a borrowed II from E minor as well.
“Dazed and Confused” by Led Zeppelin is a rock song that features a mix of blues and psychedelic elements. The chord progression in the verse is quite unconventional and may invoke a feeling of unease, which matches the song’s mysterious and somewhat disorienting theme.
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“Blackbird” by The Beatles is a song mostly in the key of G Major. It’s known for its interesting guitar work and unconventional chord progression. The song employs a mix of functional and non-functional harmony, striking a balance between traditional diatonic harmony and more experimental harmonic ideas. The chord progression also includes several chromatic or borrowed chords (Cm, Dbdim, D# (b5), C#dim, and Ebaug).
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