Till There Was You by Meredith Willson is in Ab at 90 beats per minute and runs 2:19 across 34 bars. It uses 17 chords — Eb6/9, Ebmaj7, Bb7, Edim7, Fm7, Abm6, Eb, Gbdim7, 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? Till There Was You guitar melody tab.