When I Leave The World Behind by Irving Berlin is in Ab at 120 beats per minute and runs 1:55 across 36 bars. It uses 30 chords — Bb, Bb6, Bb7, Edim, Fm, Eb, Eb6, Ebmaj7, 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? When I Leave The World Behind guitar melody tab.