Instruct: Classify a review into positive or negative sentiment.
Query: The Best Britney Cd Ever !

This album Is so cool! My favorite songs are I'm A Slave 4 U,Overprotected,I'm Not Yet A Girl, Not Yet A Woman ,Boys It has a realy good beat,Anticapating like a 60's, 70's, 80's kind of beat and I Love Rock 'N' Roll.Her music has changed as the years went buy.One time I went to her concert before and It was cool!