Summary from Wikipedia

Born in Cologne, Kingdom of Prussia, the son of a synagogue cantor, Offenbach showed early musical talent. At the age of 14, he was accepted as a student at the Paris Conservatoire; he found academic study unfulfilling and left after a year, but remained in Paris. From 1835 to 1855 he earned his living as a cellist, achieving international fame, and as a conductor. His ambition, however, was to compose comic pieces for the musical theatre. Finding the management of Paris's Opéra-Comique company uninterested in staging his works, in 1855 he leased a small theatre in the Champs-Élysées. There ...