It wasn't until the early 1900's that people really began to pay attention to lighting and mirrors and putting them to different uses. By this time, most countries had built their own versions of the disco ball. However, it was still fairly uncommon for a dance club to have a ball room that featured these more advanced light beams. Rather than having music blasting from these bouncing devices, most dance clubs would have music played from long distances away, usually via loudspeakers. This made it possible for clubs to feature music without having the annoying sound of bouncing disco balls (which is why most disco balls are always made of rigid plastic).