Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The peak of her career

This cd is what first turned me on to Joni Mitchell's music. She still holds her own in todays's world of Lilith Fairs and Sarah McLachlan as the first of the empowered and gifted female musicians. Her finest works on Blue are California, Carey, and Little Green, but the album never lacks from track to track. A worthwhile purchase for Joni Mitchell fans and neophytes alike.