Returning to the familiar Paris salons, Offenbach quietly shifted the emphasis of his work from being a cellist who also composed to being a composer who played the cello. He had already published many compositions, and some of them had sold well, but now he began to write, perform and produce musical burlesques as part of his salon presentations. He amused the comtesse de Vaux's 200 guests with a parody of Félicien David's currently fashionable "Le désert", and in April 1846 gave a concert at which seven operatic items of his own composition were premiered before an audience that included leading music critics. After some encouragement and some temporary setbacks, he seemed on the verge of breaking into theatrical composition when Paris was convulsed by the 1848 revolution, which swept Louis Philippe from the throne and led to serious bloodshed in the streets of the capital. Offenbach hastily took Hérminie and their recently born daughter to join his family in Cologne. He thought it politic to revert temporarily to the name Jacob.