Written originally for Tango orchestras and arranged for choir by well-known Argentinian arrangers. These pieces do not pose any extra difficulties in singing in Spanish as they recreate the sound of the various instruments using the voice. 
Repertoire: 
-Oblivion, Arr. Oscar Escalada, Neil A. Kjos Music Company 
-La muerte del ángel, Arr. Néstor Zadoff, GCC Ediciones 
-Invierno porteño, Arr. Liliana Cangiano