Friedrich Theodor Frohlich: Johannes & Esther (Ian Bostridge, Julius Drake) Friedrich Theodor Frohlich (1803-1836), long disregarded, is now seen as the most important Swiss composer of the Early Romantic era. He left a large number of music manuscripts, which disappeared into private hands and were soon forgotten, though most of them have survived. His works are now being increasingly rediscovered and made available to listeners.