Piece Of Me by Britney Spears is in C#m at 115 beats per minute and runs 3:30 across 55 bars. It uses 6 chords — N.C., C#5, E5, B5, F#5, G#5. 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? Piece Of Me guitar melody tab.