The tango's technique is like walking to the music while keeping feet grounded and allowing ankles and knees to brush against one another during each step taken. Tango is a flat-footed dance and unlike the other dances, has no rise and fall. Body weight is kept over the toes and the connection is held between the dancers in the hips. Ballroom tango, however, is a dance with a far more open frame, often utilising strong and staccato movements. Ballroom tango, rather than Argentine tango, is performed in international competition. The foxtrot is an American dance, believed to be of African-American origin. It was named by a vaudeville performer Harry Fox in 1914. Fox was rapidly trotting step to ragtime music. The dance therefore was originally named as the “Fox’s trot”. The foxtrot can be danced at slow, medium, or fast tempos depending on the speed of the jazz or big band music. The partners are facing one another and frame rotates from one side to another, changing direction after a measure. The dance is flat, with no rise and fall. The walking steps are taken as slow for the two beats per steps and quick for one beat per step. Foxtrot is performed for both International Standard and American Smooth. The quickstep is an English dance and was invented in the 1920s as a combination of faster tempo of foxtrot and the Charleston. It is a fast moving dance, so men are allowed to close their feet and the couples move in short syncopated steps. Quickstep includes the walks, runs, chasses, and turns of the original foxtrot dance, with some other fast figures such as locks, hops, run, quick step, jump and skips. Quick step is performed as an International Standard dance. The pasodoble originated from Spain and its dramatic bullfights. The dance is mostly performed only in competitions and rarely socially because of its many choreographic rules. The lead plays the role of the matador while the follow takes the role of the matador's cape, the bull, or even the matador. The chassez cape refers to the lead using the follow to turn them as if they are the cape, and the apel is when the lead stomps their foot to get the bull's attention. Pasodoble is performed as an International Latin dance. The Spanish bolero was developed in the late 18th century out of the "seguidilla", and its popularization is attributed to court dancers such as Sebastián Cerezo.