http://tangocommuter1.blogspot.com/2011/09/euro-records.html

" I ask if they have any specifically canyengue CDs (like the series Martha has, with a good deal of early Canaro and a number of largely forgotten orquestas that Martha tells me she loves). A long discussion in the office starts up as to what exactly canyengue music is: they tell me it used to be danced in the streets."

https://tangosynergy.com/2016/interview-with-nelson/

"Tell me about Canyengue, where would you place this style of dance in the history of tango.

The music came before the dance. In the late 1800s early 1900s the musicians started to write the music. Prior to this they played by ear. Music always written in 4×2 but then, in 1925-30 it changed to 2×4.

...

Canyengue music had many outside influences such as English country dance music, the mazurka and polkas from Poland and the Habeneras from Cuba."