Do you guys know what key apologize by One Republic is in? I looked through the tabs and chords and everything was different. Everything was capo'd at different places etc. I saw something somewhere that said the radio version was Eb major. It sounded minor to me so I just messed around in Cm over the track and it seemed to work. Can anyone shed some light on this? Thanks
It's in the key of C minor, one of the chords of which is Eb Major.

I believe the progression is somewhat like Cm - Fm (with note Ab) - Eb - Ab