Now Or Never by Halsey is in D at 108 beats per minute and runs 3:02 across 43 bars. It uses 6 chords — D, F#m, E, Bm, N.C., A. 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? Now Or Never guitar melody tab.