The lessons below are focused on one or more of these types of Alterations. Often they are combined to create very dynamic steps.
Cambios de Dirección (Changes of Direction)
A change of direction is pretty straight forward, we are altering our direction. The tango couple is moving in one direction and then begins moving in another direction. This can happen on any foot and in any direction. This could be as simple as stepping forward and then stepping back.
Cambios de Frente (Changes of Front)
Imagine your body has 4 sides straight, to your left, to your right and behind you. You are always facing in one direction and if you change your direction to face one of the 3 remaining directions then you have changed your front (frente).
Arrepentida (Repent) or Rebote (Rebound)
With an arrepentida, we step with one foot and then immediately take it back suddenly without resolving the initial step. For example, I could step forward with my left, bounce off of the left and then step to the side with the left. So, I started to go forward, changed my mind mid-step and then decided to go to the side instead. These steps are often sudden and use a quick, quick, slow rhythm.
Cadencia or Balenceo (Rock Step)
This is a simple change of direction where the leader interrupts the couple in the middle of a step and rocks back and forth either in place or in a cirlce. The key to this step is keeping the axis in the middle of the step.
Clarification: As you can see, in each of these we are either altering our direction or altering our front OR often both at the same time. We can change our direction without changing our front, but we cannot change our front without changing direction.