The Longest Time by Billy Joel is in Ab at 176 beats per minute and runs 3:14 across 89 bars. It uses 11 chords — Eb, Bb, Ab, Gm, F7, G7, Cm, Eb7, 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? The Longest Time guitar melody tab.