Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mid-60s throw back

Part "SMiLE", part "Revolver", this fantastic psychedelic trip is a joy to hear any time. I even hear "Head"-era Monkees. Don't think cheesy, though. Think 1965-1967 swinging London. I see happy hippies dancing in the grass, saying "Dude, have you REALLY LISTENED to Olivia Tremor Control, man?". That's not to say you have to be a hippie or smoke up to dig this. It's simply wonderfully orchestrated and well-crafted songs. So, if you're into good music, give this a try.