The "Ballroom Two Step" is officially danced to a "Slow, Quick, Quick" (1-2, 3, 4), rhythm. It is a combination of "Smooth" and "Latin" elements. Two step has a wide frame (like Foxtrot & Waltz), but incorporates many Rumba type elements. It feels very smooth and gliding when you dance it.
The basic step is the "Side Basic" that moves from side-to-side. The man's part starts with a "Slow" gliding left side step followed by a "Quick" back crossing step with the right foot that stops the side movement and a "Quick" in place step on the left foot.. This is followed by a "Slow" gliding right side step, a "Quick" back crossing step with the left foot and a "Quick" in place step on the right foot. The lady's part is a mirror image of the man's part.
The unique element of the Two Step is the "Left Turn". It is danced in a "closed dance position" even though the pattern moves to the right. The "Left Turn" (man's part) starts with a left forward heel step followed by a right side step and a left front crossing step, then a "Slow" gliding right side step, a "Quick" back crossing step with the left foot and a "Quick" in place step on the right foot. It is important that your toes are always pointing towards your partner during this element (this causes a curving movement that makes the front crossing step feel natural). The right side step has "Rise" (like Waltz) so the left front crossing step just floats through between the two dancers. The leader has major CBM (contra body movement) during the front crossing step. The lady's part is a mirror image of the man's except she does not have the CBM body action. There is also a similar "Right Turn" but it is much harder to execute.
Rumba elements .(under arm turns, continuous turns, open breaks, side-by-side breaks, sweethearts, etc) can be incorporated in either the Side Basic or the Left Turn patterns.
One of the classic Two Step songs is "Lady in Red", however, just about any medium to slow tempo song can be danced with Two Step. You can dance Slow Waltz merely by changing the timing from Slow, Quick, Quick to 1, 2, 3 (Quick, Quick, Quick). It is an ideal dance to learn for weddings, cruses, etc. where floor space is limited. It, however, does not work very well with fast tempo music. If you learn E.C. Swing and Ballroom Two Step you can dance to almost any speed or type of music.