See You Later, Alligator by Bill Haley & His Comets is in C at 120 beats per minute and runs 1:44 across 25 bars. It uses 5 chords — C6, N.C., C7, F9, G7. 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? See You Later, Alligator guitar melody tab.