Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Here it comes now.

This CD features alternate takes, unissued songs and other rarities by the Challengers. The Challengers were one of the most prolific (and best) of the surf bands of the 1960s. This CD shows that even on these takes that weren't considered "good enough" to be on an album, they sounded great. Surf music fans will enjoy this CD.