Instruct: Classify the given Amazon review as either positive or negative.
Query: Black and Blue is the Backstreet Boys' best album.

Black and Blue is definitely the best Backstreet Boys album. You see a more mature side of them with "Shape of My Heart" and a different variety of songs with great ballads such as "Yes I Will" and great dance songs like "Everyone" plus a different type of song "The Call" which, i think, is the best song on the album. If you love the Backstreet Boys or just love pop music, definitely get this CD.