Karma Police by Radiohead is in Em at 76 beats per minute and runs 4:03 across 29 bars. It uses 10 chords — Am, D9, Em, G, F, D, C, Bm, 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? Karma Police guitar melody tab.