Always In My Head by Coldplay is in Gm at 99 beats per minute and runs 2:55 across 30 bars. It uses 5 chords — Gm11, Bb, Dm, C, N.C.. 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? Always In My Head guitar melody tab.