This year’s winner of the Yale Series of Younger Poets competition is Sean Singer’s Discography. Playful, experimental, jazz-influenced, the poems in this book delight in sound and approach the more abstract pleasures of music. Singer takes as his subjects music, jazz figures, and historical events. Series judge W. S. Merwin praises Singer for his “roving demands on his language” and “the quick-changes of his invention in search of some provisional rightness.”