At Last by Etta James is in Bb at 90 beats per minute and runs 3:19 across 32 bars. It uses 24 chords — F, Bb, Bdim, D7, Db7, C9, Dm7, Gm7, 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? At Last guitar melody tab.