Before revision: History Development in North America and Europe Industry The 19th century singer Jenny Lind depicted performing La sonnambula "The most significant feature of the emergent popular music industry of the late 18th and early 19th centuries was the extent of its focus on the commodity form of sheet music".Middleton, Richard and Peter Manuel.
After revision: thumbljk hug ghj|History Development in North America and Europe Industry The 19th century singer Jenny Lind depicted performing La sonnambula "The most significant feature of the emergent popular music industry of the late 18th and early 19th centuries was the extent of its focus on the commodity form of sheet music".Middleton, Richard and Peter Manuel.