The artist who released the album "Al Despertar" is sometimes known as what?
Mercedes Sosa Haydée Mercedes Sosa (] ; 9 July 1935 – 4 October 2009), sometimes known as La Negra (literally: "The Black One"), was an Argentine singer who was popular throughout Latin America and many countries outside the region. She was born on Argentina's Independence Day. With her roots in Argentine folk music, Sosa became one of the preeminent exponents of nueva canción. She gave voice to songs written by many Latin American songwriters. Her music made people hail her as the "voice of the voiceless ones", and "the voice of America".
Ricardo Arjona Edgar R. Arjona Morales (born 19 January 1964), known as Ricardo Arjona (] ), is a Guatemalan singer-songwriter and former basketball player and school teacher. Arjona is one of the most successful Latin American artists of all time, with more than 40 million albums sold. He is often called "El Animal Nocturno" ("The Nocturnal Animal"), thanks to his breakthrough success with his fourth studio album which bears the same name. His music ranges from ballads to Latin pop, rock, pop rock, Cuban music, and more recently a cappella performances and a mixture of Tejano music and Norteño music, and other Afro-American and Latin sounds. Arjona is noted for his lyrical style, and often addresses topics such as love, sexuality, violence, racism and immigration.