How the Guitar has evolved over the last 80 odd years from the frying pan guitar to the Ibanez string guitar. Looks like Leo Fender & Les Paul copied their guitar body shape from Bigsby-Travis in Must research this company.
"Classical" music is what we consider "older" music. But in reality, music does not age. Composers grow old and die, but their music never dies. People still listen to music that was created hundreds and even thousands of years ago.