Yes, a couple dancing improvisation is the couple freestyle.
So there comes two major questions: first, how to improvise; second, how to improvise well.
For the first question, we can just get back to the basic questions- what is the basis of dancing? Dancing is the combined result of your enjoyment of music, your rhythmic body movements, your emotional expression through music. So first, you need to feel the music, mind that I didn't say know the music, I said 'feel' the music (Corazon).
Then you need to train your body to move as the way you want it move (enhance flexibility, muscle strength, muscle endurance). So that you can express the music through the morning of the body. In order to do it in a coupled way, you also need to under the mechanism of leading and following (come check here if you need help with these techniques)
Improvisation is a grand term, the basis of it is your understanding of dance, music and body. Complete beginners can also improvise, for example, a beginner cha cha cha dancer would dance 23 and chasse, and the improvisation comes when the dance is led forward or backward or side, it can be progressively forward, or progressively backward, or progressively sidewards, or going around the lead, or going around the follow, the follower may not know which direction the lead might lead but can still follow, for all the follower needs to do is to keep the rhythm and 'follow' the hint that the lead gives. From this instance, one does not need to be very experienced to tell that once both dancers can take the steps at the same rhythm, improvisation would be reasonably easy. So the answer to the first question is to know the basis.
The second question will be a little tricky to answer, for I would say 'do the basic well then your improvisation will probably be quite well'. Yes, and I can imagine that how you get crossed and say what the rubbish I am talking about. However, this is what you would probably get from different teachers. Maybe every teacher tends to use different languages or different ways to interpret, the fundamental concept is the same, you know what, because we call this the basic, and the fundamental concept is the 'basic', and to build up high level technique you need the 'basic'.
This is not bullshit. This is the truth.
Now let's break it a little further. The rhythm is the first you know, then to do well in improvisation, I have to mention that the posture and frame are the keys.
Since the both the leader and the follower would not know the next step, the mindset at the point would be like 'everything is maybe', that means, when they place their foot, it is usually not fully weighted as the step could be a 'Q' or 'S' so in order to avoid a retard it is needed to keep 80% weight instead of full weight, in this case, the centre is always at its place.
When they turn they tend to suspend the altitude until the driving fades or there is a stopping step made. The reason for the height is that they have no idea if the turn is an underturn or overturn, or a double turn or a triple turn, or just a standard turn, if they do not hold themselves high the turn will be collapsed. However, staying high all time will make any turn look elegant.
The above two are about the posture during the dance. These tiny points help graceful dancing, now if you need to lead and follow without harshness, you will need the frame. A proper frame gives the couple 5 connecting points, and these five connecting points help convey information about directions and dance steps- imagine you are walking with clothes on or taking clothes in hands and walking naked. I like them on my body because it is easier and it is more romantic. Remember, partner is part of you. Dancing make two into one so that the couple can glide across the floor together effortlessly.
(part 1)- What is Couple Freestyle?
(part 2)- How to Couple Freestyle?
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