Emil (Wilhelm Emilius Zinn) Hartmann (1836-1898) Danish composer, organist and conductor. Emil Hartmann was the eldest son of J.P.E. Hartmann, by whom he was given a private music education at home. Thus, Hartmann began composing even before he could talk properly, but his real debut was not until the year 1859. The year after his debut, Emil Hartmann went on a study trip to Germany, and he continued to divide his activities between Germany and Denmark.