Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Groovy but cerebral voiceless experimental rock gift

Good starting point in a pretty weak discography seems to be the briefly recorded band's most solid, articulate outing in their weird, playfully menacing style. Players are in high form here, keeping the compelling repetition informed and brisk for anyone interested in the opposite side of your typical jam band. Here the esteemed math-rock compatriots get to flex their considerable self-conscious chops, ushering in the band's renewed interest in the faltering genre. Hopefully these impressive, though essentially glorified, compositional outings will continue to refine and focus both band and fans alike as the obligatory LP hopefully looms around the corner.