Dr. Dre’s “The Chronic,” Snoop Doggy Dogg’s “Doggystyle,” Tupac’s “All Eyez On Me” (2x tape set) and “The Don Killuminati (7 Day Theory)” – all those 4 classic hip-hop albums will be reissued on cassette on April 20 to celebrate Death Row Record’s 30th year anniversary. “Death Row Records beams…