Roberto Fidel Ernesto Sorokin, known by his stage name Coti, is an Argentine musician. He is best known for his work with other Spanish-language artists like Andrés Calamaro, Julieta Venegas, Paulina Rubio and Luis Miguel. His 2005 release, "Esta Mañana y Otros Cuentos" went gold in both Argentina and Mexico. It went double platinum in Spain.