If i'm thinking in terms of the basic chord progression
Gmin Ebmin Cmin
I guess you could say it is almost in the key of C minor, excepting the second chord which has a Gb (giving the progression its' unique color).
Would you say it modulates through two keys from C min to Db min for that chord then back again (the last Cmin doesn't exist in Db)?
Can anyone make deeper theoretical relation between the chords than this?
Obviously this type of song is the product of trial and error, playing keys till something comes up but i'm interested in going deeper into what makes a progression like this happen because it has such a unique sound yet doesn't deviate too far from a comfortable pop progression. I like the slightly complex emotion it evokes.