(b Prague, 1754; d Prague, 1824). Bohem. soprano, composer, and pianist, wife of František DuŠek. Friend of Mozart who wrote concert aria Bella mia fiamma, addio (K528, 1787), for her. First singer of Beethoven's Ah, perfido! Op.65, 1796, also probably written for her.
From The Concise Oxford Dictionary of Music in Oxford Reference.