Juan Epstein Cipha Sounds & Peter Rosenberg New York Cipha Sounds and Peter Rosenberg's 'Juan Epstein' is the longest running and most beloved hip hop nerdcast on the planet. Ciph and Rosenberg go in depth on Hip Hop with EVERYONE. They ask the questions that only TRUE nerdy fans can ask. Past guests include Jay-Z, Eminem, Aziz Ansari, Big Daddy Kane, Ghostface, Diamond D, Redman, Patrice O'neal, and many more! Hundreds of hours of Hip Hop gold. Users who follow Juan Epstein Winter Sensation Juan Arenas Los Angeles YuhTwelve James Morales James Morales Lottery Pick Bunker Blake Bunker Blake Philadelphia, PA JPBoxingNYC JP New York user799712952 Jay Jack ( Fort Wayne Indiana ) Jay Jack Fort Wayne Indiana starchild3 chiquito chulo Laura Garcia San Diego