Suffering from recurrent endocrine and respiratory problems in later years, the 74-year-old Sosa was hospitalized in Buenos Aires on September 18, 2009 [REF].
Sosa's obituary in The Daily Telegraph said she was "an unrivalled interpreter of works by her compatriot, the Argentine Atahualpa Yupanqui, and Chile's Violeta Parra" [REF].