BY JONATHAN VALANIA FOR THE INQUIRER In 1998, Neutral Milk Hotel released an album of hallucinatory folk-rock called In The Aeroplane Over The Sea that is, it can be said without fear of exaggeration, nothing short of a heartbreaking work of staggering genius. Like My Bloody Valentine’s Loveless, it is lightning caught in a bottle, one of those rare perfect albums that come along maybe once a decade. Or once a lifetime. In 1999, Jeff Mangum — Neutral Milk’s singer, songwriter and primary guitarist — disappeared from public life without explanation, declining all entreaties to perform or discuss the album […]