According to some sources the roots of this dance are in New York's Harlem area, others put the origin of the dance with the Negroes of the southeast United States where it resembled the dances of the Seminole Indians. Depending on which source you are looking at either the Negroes copied it from the Indians or the Indians copied it from the Negroes. The Son, which is a slower more refined Rumba was a favorite among the middle class Cubans. The wealthy section of Cuban society preferred the Danzon, which is an even slower Rumba using very small steps and more subtle hip movements. The modified version of the Rumba known as the Son was introduced to Americans in 1913. Power: Energy is a wonderful thing and one of the most important things in dances like the Quick Step or the Jive however, if over-done it just becomes wild movements. Judges, like dancers each have different styles and different ideas of the importance of various criteria. One judge may put a greater value on technique while another thinks musicality and expression are more important. One place you may want to consider looking into for ballroom dance lessons is a local college or university. Several colleges now offer ballroom dancing as a credit for physical education, and often they will invite the public to attend the classes. These classes are typically about one hour long, once or twice a week, and last for about four to five months. In the early 1920's competitive ballroom dancing was gaining popularity so the Imperial Society of Teachers of Dancing (formerly known as The Imperial Society of Dance Teachers) formed a Ballroom Branch whose function was to standardize the ballroom dances. Modern ballroom dancing revolves around five dances, the Modern Waltz, the Viennese Waltz, the Slow Foxtrot, Tango and the Quickstep. Ballrooms were a very popular source of entertainment before the days of cable television, internet, or satellite radio. Often couples would congregate here to socialize and dance with other couples, and it wasn't long before dance competitions gained popularity. There are many different dances and versions of ballroom dancing.