The bar below is a 4/4 kind of measure - as you can see there is B1, B2, B3 and B4. In tango we normally step on B1 and B3 and we get a calm and peacefull caminata. (One box is 1/16 so 4 of them are 4/16 = 1/4)
Tango: Measure I
To create more action we can do a double step, a Quick step, by dividing our ordinary step to two. By using B1, B2 and B3 we get our double time-step and a feeling of change and urgency. The boxes above present also a time value so we get following numbers
Quick: a-d = 4 boxes => 4/16 or 1/4
Quick: e-h = 4 boxes => 4/16 or 1/4
Slow : i-p = 8 boxes => 8/16 or 1/2
Milongas musical structure can vary but here we focus on steps and what happends when we split a step to two. In the green bar you find the red boxes indicating the accents in music and the steps you take in basic milonga. When your foot hits the floor at B1, the other foot will do the same on B2. Here we need to move some faster or make the steps shorter than in tango!
When we devide our ordinary step in milonga we will put down our feet on B1, C and B2. We could also write it like a, c and e. Our numbers looks like this
Quick: a-b = 2 boxes => 2/16 or 1/8
Quick: c-d = 2 boxes => 2/16 or 1/8
Slow : e-h = 4 boxes => 4/16 or 2/8
If you compared the QQS above for tango and milonga you find the difference in time, don't you!
QQS have a timely difference even between the tangos going in different speed as well as for milongas in different speed. But we can still keep the formula!