Roberto Fidel Ernesto Sorokin, who performs under the stage name Coti, is an Argentine singer-songwriter, best known for collaborations with other Spanish-language artists like Andrés Calamaro (Arg), Julieta Venegas (Mex), Paulina Rubio (Mex) 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.