Tango and Zen - this sounds like a culture clash. But it isn't. Of course everything is Zen once you are in it. But maybe Tango is a little bit more, just because there is no direct familiarity.
For everybody doing Zen this familiarity is quite obvious, because one should try to reach maximum awerness every single moment.
But for most Tango Dancers this is a new approach. Normaly we just dance, try to do the correct step, stay upright, opening our mind for what the partner is up to now. Once we get in the Zen-Mind, all this is not important anymore. We are there, floating free, just music, all movement. Doing Tango-Zen helps us to reach this state of mind, it combines the best of both worlds.
The author is well known on Buddhist internet lists. Sadly for spamming and plugging his book, which by the way has nothing to do with Zen. Zen isn't just a word you can add to a title to get sales, it's Zen Buddhism, a centuries old tradition that can indeed enliven everything you do in your life. Sadly this book enlivens nothing except the author's bank account.