The chords for Radiohead's Creep follow this pattern: G Bm C Cm
My question is whether the C->Cm constitutes a change of key and if so which keys are being used and why does this 'work'?
The chords for Radiohead's Creep follow this pattern: G Bm C Cm
My question is whether the C->Cm constitutes a change of key and if so which keys are being used and why does this 'work'?
No key change. Cm is from the parallel key of G minor, a common borrowing. It's not even considered a modulation.
The second chord is actually B major, acting as secondary dominant to E minor. However the E minor is avoided via deceptive motion to C major. Depending on who you ask, this is either a modulation or it isn't, but there is certainly an accidental (the D sharp).
After the C major comes a C minor which is acting as minor subdominant of G to set up plagal motion back to G.
So there is continuous tension between the keys of G major and its relative minor, E minor. Even though there isn't a single E minor chord in the song. Nifty, huh? I love Radiohead.
Cmchord is a minor iv chord in the key ofG. This might make the question a duplicate of the question I've linked to above. – jdjazz Jul 30 '17 at 17:22