The chosen piece is "Poema." Here are a few video clips that illustrate how musicality makes a big impact. Observe the differences in their interpretations of the same Tango piece. All of them beautiful to watch, regardless of Tango style. The people shown below are professionals and have expended many years and innumerable hours practicing and performing, thus honing their skills in musicality.
To the regular lead social dancer (such as myself), the lesson gleaned from here is that (as the lead), you have to listen to the music and dance to it. I have lost count of the number of times I've watched people dance and do "Steps." Out of tune, out of time, out of rhythm, and moving together without harmony.
IMHO, "Musicality" is a glue that melds one's skill with that of the partner, while enveloped in the embrace of the music. You could do nothing but simply walk and syncopate it to the music, and it would be a lusciously beautiful experience.
= = = = = = = = = = = = = = = = =
Jennifer Bratt & Ney Melo
Tete Rusconi & Rosana Remón
Chicho Frumboli and Eugenia Parilla
Geraldine Rojas & Javier Rodrigues(Thanks for the link, Tina)