Nirvana by Sam Smith is in Em at 80 beats per minute and runs 3:12 across 26 bars. It uses 7 chords — Em, Em7, C, G, Bm7, Am, Dm. 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? Nirvana guitar melody tab.