The 1910s: The first phonographs
As early as 1877, there were phonographs to play music on and by the 1910s, many families had one.
The music was on ‘records’ made of aluminum foil.
People could listen to them only a few times before the foil broke.
Later the music was on wax cylinders.
These could hold longer recordings (two to four minutes), and people could play them more often.
来源：MSE指定教材 English In Mind (student's book 2)