“Everybody rejectin’ me in this industry,” raps south-suburban MC and 2008ighties crew leader Calez toward the end of “Heaven on Earth,” one of the finer cuts on his new Ceito mixtape. It’s a somber number, with Calez dropping religiously confessional rhymes over a sluggish boom-bap beat before cycling back to the chorus: “This will be the last sad song I ever write / After this I’m moving on to a better life.” For a few moments there I’d taken “Heaven on Earth” as a resignation.