Sometime between December 2017 and February 2018, Peluso revealed that her debut EP would be called La Sandunguera and that it would come out on March 9, 2018, but the project was pushed back to April 6, 2018, due to technical issues.

On August 30, Peluso participated in a music session for the Austrian company Red Bull, where she sang the tracks "Hot Butter" and "La Sandunguera".

Raúl Guillén of Jenesaispop said La Sandunguera "is a bold and powerful project that leaves no doubts about Nathy's enormous virtues, although it is far removed from the presumptions of the new hip hop."

For Alan Queipo, from Mondo Sonoro magazine, La Sandunguera "presents five songs that complement, feed and add to the discourse (aesthetic, sonorous, lyrical) of the song that reigns as the connecting axis on the EP's equator, as a permanent center of gravity which makes one look at Latin music, contemporary urban music, soul and R&B cadences, and the particular 'Peluso universe'".

Rating the album 9.25 out of 10 stars, Vibes Of Silence's Nacho wrote that the EP "shows a theatrical madness of soul and R&B, and Nathy's brilliant voice and versatility."

He defined the EP as a "conceptual exercise with a more organic approach, in which she flirts with salsa, blues, jazz vocal patterns, Italian song and radio soap opera".