Instruct: Classify Amazon reviews into positive or negative sentiment
Query: They've done so much better

For people expecting the chill, downtempo, easy foot-tappin' harmony of "Vertigo", "Back to Mine" doesn't quite measure up. As another reviewer here put it, the 80s synth-pop is a step is a very different direction. That said, "Back To Mine" does have some good tracks. For those listeners new to Groove Armada, I would recommend going straight to "Vertigo".