Mercedes Sosa is an Argentine singer immensely popular throughout Latin America. She has won the Latin Grammy Award for Best Folk Album in 2000, 2003 and 2006.

Location: Palacio de los Deportes, Heredia
Entrance fee: ¢ 12000,-; ¢ 25000,-
Presale locations: Servimas (Guadalupe, Alajuela, Heredia, Curridabat, San Sebastian), Häagen-Dazs (Curridabat, Escazu), Bansbach (Mall Multiplaza, San Jose)