Rhythm
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Slow  Rhythm for tempo slower than 40 bars/min
Quick Rhythm for tempo faster than 40 bars/min

These two dances are the "rhythm" or crowded ballroom form of FOXTROT and 
QUICKSTEP. "Rhythm" dancing can be danced to any tempo 4/4 music (four beat in 
a bar). The standardized FOXTROT and QUICKSTEP require a more strict tempo.

Good reference :
Modern Ballroom Dancing
 - Victor Silvester
National Library (Central)   793.33 SIL   Chapter 12 (Page 60 to 74)

Quarter Turns
Natural Pivot Turn
Reverse Pivot Turn
Rotary Chasse 
Back Corte
Double Chasse Back Corte

Chasse Reverse Turn
Chasse Reverse Turn
Six Quick Side Step (slow rhythm only)

The Twinkle (Slow  Rhythm)
The Twinkle (Quick Rhythm)

Side Step (Quick Rhythm)


Slow Rythm danced to foxtrot music
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Perform FULL quarter turn of quickstep.

At corners, to do a change of line of dance.
Guy
S Left footforward
S Shift weight back onto right
Q left step back at face diagonal to wall of new line of dance
Q right foot meet left.