Producciones Lastra presents a musical Tribute to Merecedes Sosa with the great singer Patricia Nora and 3 great musicians rememorating the best songs of the "voice of Latinoamerica" such as “Canción con todos”, “Alfonsina y el mar”, “Gracias a la vida”, “Como la cigarra”, “Zamba para no morir”, “La maza”, “Todo cambia” o “Duerme negrito”

Mercedes Sosa was an Argentine singer who was popular throughout Latin America and many countries outside the continent. With her roots in Argentine folk music, Sosa became one of the preeminent exponents of nueva canción. She gave voice to songs written by both Brazilians and Cubans. She was best known as the "voice of the voiceless ones".

Sosa performed in venues such as the Lincoln Center in New York City, the Théâtre Mogador in Paris and the Sistine Chapel in Vatican City, as well as sell-out shows in New York's Carnegie Hall and the Roman Colosseum during her final decade of life. Her career spanned four decades and she was the recipient of several Grammy awards and nominations, including a posthumous Latin Grammy award for Best Folk Album. She served as an ambassador for UNICEF.

She won the Latin Grammy Award for Best Folk Album in 2000 ("Misa Criolla"), 2003 ("Acústico"), and 2006 ("Corazón Libre"), as well as many international awards.

In 1995, Konex Foundation from Argentina granted her the Diamond Konex Award, one of the most prestigious awards in Argentina, as the most important personality in the Popular Music of her country in the last decade.

Her album Cantora 1 won two awards at the Latin Grammy Awards of 2009. She won Best Folk Album and was nominated for Album of the Year. The album was also awarded Best Recording Package.

In a career spanning of four decades, she worked with performers across several genres and generations, folk, opera, pop, rock, including: Martha Argerich, Andrea Bocelli, David Broza, Franco Battiato, Joan Baez, Francis Cabrel, Gal Costa, Luz Casal, Lila Downs, Lucio Dalla, Maria Farantouri, Lucecita Benitez, Nilda Fernández, Charly Garcia, León Gieco, Gian Marco, Nana Mouskouri, Pablo Milanés, Holly Near, Milton Nascimento, Pata Negra, Fito Páez, Lourdes Pérez, Luciano Pavarotti, Silvio Rodríguez, Ismael Serrano, Shakira, Sting, Caetano Veloso,Julieta Venegas and Konstantin Wecker.

Sosa participated in a 1999 production of Ariel Ramírez's Misa Criolla. Her song Balderrama is featured in the 2008 movie Che, starring Benicio del Toro as the Argentine Marxist revolutionary Che Guevara.