Genre: tango vals

http://www.verytangostore.com/tango-vals.html

" In fact by 1910, quite a few composers were writing tango composition in 3/4 time, and the Tango Vals was born!
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http://www.tangology101.com/main.cfm/title/Vals/id/1134

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Vals

 Here are some of our favorite steps for vals. 

• Vals - Part 1 - Hesitation Steps and Change of Direction
  This is part 1 of a series in vals (waltz). In this class, we look at vals with a special emphasis on finding the 1 (the strong beat) and then using either the 2 or the 3 (the weak beats)."