The CD version is packaged in a 4-panel digipak with artwork by Shane Ingersoll.An alloy is a mixture of chemical agents that forms a new substance that retains the characteristics of a metal. The mechanical properties of alloys often differ significantly from those of it's constituents.It has been more than two years since Shrapknel's debut album, during which time the Curly Castro and PremRock duo have individually released successful solo albums with Backwoodz Studioz. Fittingly, these two albums were nothing alike; Castro's incendiary Little Robert Hutton is a high-octane soundclash, starkly contrasting the knotty intimacy of PremRock's Load Bearing Crow's Feet.A new Shrapknel album means a return to foundry and forge, the alchemy of turning two into one. Carbon and Iron make steel, rest assured, there will be no sophomore slump. Metal Lung is the evidence. The bulk of the production is provided by Steel Tipped Dove, who has worked with Nosaj, billy woods, SHIRT, R.A.P. Ferreira and just put out an incredible album of his own on Backwoodz last year (Call Me When You're Outside). Additional production comes from Child Actor (ELUCID, Serengeti, Armand Hammer) & Olof Melander (Moor Mother, Project Mooncircle). Mixed and mastered by the incomparable Willie Green.