I was exasperated upon discovering no album existed to accompany a so-called “album release concert” by vocalist Lívia Nestrovski and pianist Henrique Eisenmann in the Kansas City area four months ago. Even though the Brazilian duo’s characterization of their appearance in the heart of the Midwest in that fashion was patently nonsensical, I was desperate to confirm my unqualified enthusiasm for their recital at the 1900 Building. Nação is finally here. Sort of. The album streams at Spotify and YouTube, but it doesn’t seem to be available at Amazon, Apple, Bandcamp or Tidal. Nação’s unadorned romantic and playful art songs replicate what the duo sounded like in Mission Woods, Kansas.