If I Ruled The World by Jamie Cullum is in Ab at 58 beats per minute and runs 4:19 across 45 bars. It uses 30 chords — Ab, Cm, Bb, Eb, Cm11, Abmaj7, Ebmaj7, G13sus, and a few more. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? If I Ruled The World guitar melody tab.