Instruct: Classify the given review into positive or negative sentiment.
Query: Duets are Sensational!!! Lady Gaga is amazing with Tony Bennett!

Tony Bennett proves that musicians are young at heart and continue to find new ways to present their music. The duets offered on this CD are absolutely amazing and offer a few surprises! Josh Groban and Michael Buble are their usual excellent self. But Lady Gaga's jazz and scat singing in The Lady is a Tramp is some of the best singing I have heard. She is a cross between Eydie Gorme and Ella Fitzgerald. This is one of the best CDs I have purchased lately.