Ocean by Martin Garrix is in Fm at 140 beats per minute and runs 3:27 across 58 bars. It uses 22 chords — N.C., Cm, Bm, Bb, A, Ab, G, Fm, 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? Ocean guitar melody tab.