Diamonds by Josef Salvat is in Bm at 85 beats per minute and runs 4:00 across 75 bars. It uses 5 chords — G, Bm, A, F#m, F#m7. 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? Diamonds guitar melody tab.