Actualy, WAV, if you listen carefuly, you will find that the phrasing and delivery is very Ukrainian, and very clearly drawn from their tradition. Listen to Ukrainian romances of the early 1900s. Yes, Vakarchuk does sing a bit faster than was the norm, but he wasn't living in 1920 either. If we had a time machine, I'm sure any of the great singers of the 20s and 30s would be able to recognise the traditional elements. After all, they themselves brought the traditions forward in their own days.
The video is, of course, silly. Vakarchuk doesn't take himself too seriously. I thought you would be more distressed by the wanton destruction of tennis rackets than by the girl with the weird eyes, honestly.



This one is a cover of an Ivasyuk song. Volodimyr Ivasyuk, for those not in the know, was a very talented violinist and composer, who composed dozens of songs in the 60s and 70s. Some of them are very much pop songs of their time, others, like Chervona Ruta, almost sound like folksongs and are an important part of Ukrainian culture.
http://www.youtube.com/watch?v=K2QlH5pfhss