That Sunday, That Summer by Nat "King" Cole is in Ab at 75 beats per minute and runs 3:40 across 38 bars. It uses 23 chords — Eb, Fm7, Bb7, Gm7, Ab6, C7, Bb, 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? That Sunday, That Summer guitar melody tab.