Who Cares? by George Gershwin is in C at 120 beats per minute and runs 3:12 across 57 bars. It uses 32 chords — C, Ab7, Dm7, G7, Db, G9, C6, Ab, 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? Who Cares? guitar melody tab.