If our eyes only saw frames (IE: 30 images a second), like a single lens reflex camera, we'd see images pop in and out of existance and that would really be annoying and not as advantagous to us in our three dimensional space and bodies.
In the Vienna of the second half of the 18th century, in addition to Haydn and Mozart, three symphonic composers, namely Leopold Hoffmann, Carl Ditters von Dittersdorf and J.B. Vanhal helped further the development of the symphony.
Take 1. The record player was originally invented in America by Thomas A. Edison the creator of the light bulb and other inventions. It was invented by Thomas in 1877. The first records were made out of tinfoil which had a spiral groove which went up and down.