Final answer:
The first members of the Viennese School were Gustav Klimt and Arnold Schoenberg, who excelled in painting and music, respectively.
Step-by-step explanation:
The first members of the Viennese School were Gustav Klimt, Georg Schrimpf, Alexander Kanoldt, Carlo Mense, Heinrich Maria Davringhausen, Wilhelm Heise, and Arnold Schoenberg. Gustav Klimt, an Austrian expressionist, created beautiful but haunting portraits, including the famous artwork 'The Kiss.' On the other hand, Arnold Schoenberg, an Austrian composer, was known for his innovations in atonal music.