Back At Your Door by Maroon 5 is in Ab at 111 beats per minute and runs 3:34 across 42 bars. It uses 12 chords — Gbdim7, Fm7, E7, Eb, Cm, Ab, Bb, Abmaj7, 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? Back At Your Door guitar melody tab.