Jazz in the Czech Republic has a rich history, and its modern scene carries the tradition. Prague remains the focus, and if you want to experience it, visit these four stages. AghaRTA http://www.youtube.com/watch?v=_T8v_6YTUR8 Tucked away near Old Town Square, AghaRTA jazz club is in a 14th-century basement. The name stems from a 1975 Miles Davis …