The ghost of Layne Staley looms large on “Black Gives Way to Blue,” Alice in Chains’ fourth studio album and first in 14 years. The troubled and drug-saddled singer was found dead in his condominium April 19, 2002. An autopsy revealed Staley had died from a mixture of heroin and cocaine 14 days before the discovery of his body. Alice in Chains will always be synonymous with Staley, despite Jerry Cantrell being the one who supplied the gurgling guitar grooves, co-lead vocals...