I’m Not The Only One by Sam Smith is in Bb at 85 beats per minute and runs 3:46 across 46 bars. It uses 6 chords — F, A, Dm, Bbmaj7, Bb, 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? I’m Not The Only One guitar melody tab.