Over the past century, music has changed to an incredible degree and musical sounds that were once popular in the early twentieth century sound absolutely nothing like what's heard on radios in the modern era. The changes in music have also brought about the ability for people to play an instrument after learning it on their own or taking lessons in school. Over the past century the instrument that has garnered the most new fans has been the guitar with more people deciding to learn how to play guitar than any other instrument since the advent of rock and roll.