“Gem Club's "Polly" (from In Roses, out January 28 via Hardly Art) is both balladesque and ambitious, reluctantly unfolding over seven minutes. Christopher Barnes takes on the role of oblique narrator (“We were lost”) as sprawlingly-orchestrated arrangements from conductor Minna Choi render "Polly"'s carefully-limned lyrics with artful opacity: “I felt us drifting from our nature,” he coos slowly, ”