Why Should I Worry? by Billy Joel is in G at 168 beats per minute and runs 3:16 across 101 bars. It uses 11 chords — G, C, Eb, Bb, Gm, F7, Ab, Em, 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? Why Should I Worry? guitar melody tab.