In 1920s Jazz had spread to dance halls.Early jazz influences started to manifest themselves in the music used by marching bands and dance bands of the day, which was the main form of popular concert music in the early twentieth century. The advent of radio and the ready availability of phonograph records which were selling in the tens of millions in the late nineteen-twenties introduced jazz to people living in even the most remote locations. The new media provided an opportunity for many gifted upcoming jazz musicians to get noticed and make a name for themselves. These talented individuals were on their way to becoming major music stars and household names. Radio also had the effect of causing a revival of old songs, as well as popularizing new songs.The popular dance music of the time was not jazz, but there were early forms taking shape in the evolving blues-ragtime experimental area that would soon turn into jazz. Popular Tin Pan Alley composers like Irving Berlin incorporated ragtime influence into their compositions, though they rarely used the specific musical techniques that were often used by jazz players like the rhythms and the blue notes. Orchestral music was also very popular with new compositions like Ravel's "Bolero" receiving critical acclaim. Composers like Eugene Goossens also created popular music for Symphony Orchestras. It is because of this popular orchestral music that there is such a high demand for a TakeLessons violin teacher and learning musical instruments in general. Dancing began to actively involve the upper body for the first time as women began shaking their torsos in a dance called the Shimmy. Young people took to throwing their arms and legs in the air with reckless abandon and hopping or "toddling" every step in the Foxtrot, and soon every college student was doing a new dance which became known as the Toddle.The dance that epitomizes the 1920's is the Charleston. The Charleston was introduced to the public in the Ziegfield Follies of 1923 by the all black cast Afro-American Broadway musical "Running Wild", and became so popular that even today, it is still a symbol for the 1920s Jazz Age. The Charleston is characterized by outward heel kicks combined with an up and down movement achieved by bending and straightening the knees in time to the music. Flappers with their knock knees, crossing hands, and flying beads danced the Charleston, and a dance called the "Black Bottom”.