Haydée Mercedes Sosa (1935 – 2009) was an Argentine singer who was popular throughout Latin America and many countries outside the region. With her roots in Argentine folk music, Sosa became one of the preeminent exponents of El nuevo cancionero. She gave voice to songs written by many Latin American songwriters. Her music made people hail her as the "voice of the voiceless ones".
Note: The song Alfonsina y El Mar is about the Argentine poet Alfonsina Storni and how she committed suicide by drowning rather than face life suffering from breast cancer.