OrillaWhorl

I was watching a documentary on the Tango (the dance) last night, and it was mentioned that the Tango originated in the Orilla, a slum in Buenos Aires. Orilla means shore or bank in Spanish, and I'd assume the BA Orilla is next to the Rio de la Plata. Possible link between Viron and Nessus (if one accepts that Nessus is BA)? Wes