[link to original on tumblr]
---&---
D major (D, F#, A)
D minor (D, F, A)
A major (A, C#, E)
B major (B, D#, F#)
B minor (B, D, F#)
A major (A, C#, E)
A minor (A, C, E)
E major (E, G#, B)
I'd noticed before that it was a weird chord progression, what with sequential changes from a major to a minor with the same root, but until last night, I'd never noticed that chromatic phrase hidden within the chords.