 O'Connor Bill" was passed by the British Parliament, following many of the popular music writers at the time dying in poverty due to extensive piracy by gangs during the piracy crisis of sheet music in the early 20th century.The gangs would often buy a copy of the music at full price, copy it, and resell it, often at half the price of the original.The film "I'll Be Your Sweetheart" (1945), commissioned by the British Ministry of Information, is based on the events of the day.