“Yesterday” is predominantly composed in the key of F Major. The song is a classic in pop songwriting and showcases the effective use of borrowed chords to capture a unique, nostalgic sound that has made it one of the most covered songs in pop music. Specifically, in this verse, the use of secondary dominants and borrowed chords from the parallel minor key provides the song’s distinctive tonal color.
“Here Comes The Sun” by The Beatles uses a D Major scale. The song primarily comprises chords built on the tonic or root note (D), which lends a consistent, grounded feel. This reflects the lyrics’ mood—contentment, renewed optimism, and a sense of homecoming with the arrival of the sun.
The song “I Will” by The Beatles is an example of their unique and sophisticated approach to pop songwriting, demonstrating their comprehensive mastery of harmony within the pop idiom. The majority of the harmonies used in the song are diatonic to the key of C major, however there are several instances of borrowed chords that add color and complexity to the song’s overall harmonic structure.
The song “Hurt” by Nine Inch Nails is in the key of B minor. The verse has a simple yet effective chord progression that revolves mainly around the i, III, and IV chords with a slight deviation towards the end. The chorus is characterized by a i-VII-III-VI progression with a slight extension. The outro mostly repeats the verse progression but is shorter.
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“You Can’t Always Get What You Want” by The Rolling Stones is built around major tonality and uses direct and simple progressions. It also features what are known as additive chords (Gadd9) – chords to which notes are added beyond the common triad. The song commences in the key of G Major, indicated by the G, Gadd9, and C chords. These chords progress in an almost continual cyclical pattern across the verses. Here, the dominant chord (D) in the key of G Major is absent, which grants a tonal ambiguity to the song. Interestingly, the song takes a departure into a different key later on which will not be included in this analysis as it pertains to the Verse only.
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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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