Ferdinand Zellbell the Younger (1719 – 21 April 1780) was a Swedish composer and a founding member of the Royal Swedish Academy of Music. He was organist at Storkyrkan, the main church of Stockholm, and chief conductor at Kungliga Hovkapellet (the Royal Court Orchestra). Arguably his most accomplished composition is an opera, Il Giudizio d'Aminta, written on the occasion of the birthday of future Empress Catherine the Great of Russia. Source: Wikipedia (en)