Best Day Of My Life by American Authors is in D at 100 beats per minute and runs 2:52 across 67 bars. It uses 5 chords — N.C., D, G, Gmaj7, Bm. 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? Best Day Of My Life guitar melody tab.