Now that Kurt Cobain has been dead roughly as long as he was alive, what's left to absorb about him? Every utterance has been picked to the bone; his thrift-shop MTV Unplugged sweater commands real-estate prices(opens in a new tab); his doomed visage is now an NFT(opens in a new tab). But talk of drugs, guns and dying young obfuscates the most interesting things about Nirvana: Their melodic gifts, moral compass and chemistry as a band. And that's where producers Jonathan Hay and Cain McKnight come in...