Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tiesto has lost his marbles

A huge Tiesto fan of the past, I have to say I was incredibly dissapointed. A few nice vocals but thats it. Anyone who rates this highly hasn't been listening to trance much. This is just not the tiesto we use to know. Success has definitely gone to his head. He has sold out to the mainstream crowd. His trance sounds more like pop now. Also it seems he is trying to incorporate some new style or something with his choice of some of the sounds and it sounds incredibly annoying. Tiesto needs to find his marbles and get back to the real sounds that made him no.1