A Classic Rock Loop
I – ♭VII – IV progression in A major
A Classic Rock Loop — I – ♭VII – IV
The A Classic Rock Loop (A – G – D) borrows the ♭VII chord from the parallel Mixolydian mode, giving it a rebellious, anthemic edge. This three-chord riff has powered rock music since the 1960s. With seventh chords (AMaj7 – G7 – DMaj7), it takes on a bluesier, more soulful character.