Roberto Fidel Ernesto Sorokin Esparza (born June 14, 1973), known professionally as Coti, is an Argentine singer, songwriter, and musician.

He is best known for collaborations with other Spanish-language artists like Andrés Calamaro, Julieta Venegas, Natalia Oreiro and Luis Miguel in his last album.

His 2005 release, Esta Mañana y Otros Cuentos went gold in both Argentina and Mexico, while going double platinum in Spain.

[1] Roberto Fidel Ernesto Sorokin Esparza[2][3] was born in Rosario, Santa Fe, though he moved to Concordia, Entre Ríos at the age of three.

In the late 1990s, Coti penned songs for Andrés Calamaro, Julieta Venegas, Paulina Rubio, Natalia Oreiro, Los Enanitos Verdes, Diego Torres, and Alejandro Lerner.