Classical guitarist Brad Richter and cellist Viktor Uzur are both virtuoso musicians with their own careers, but when they play together as the Richter-Uzur Duo, a unique style emerges that blends classical with world, pop, rock and folk tunes. Their wild and unexpected combinations, or “mash-ups,” might meld Stevie Wonder with Isaac Albeniz, or Rimsky-Korsakov with a Greek “miserlou.” While visiting Las Cruces, the two joined Intermezzo host Leora Zeitlin in a conversation about their early influences, and their love of composing and arranging music in new ways.