She also started learning music theory and choral direction in the Amadeo Roldán Conservatory, and finished her studies in Switzerland where she studied old chant.
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Her first solo album, Haydée, came out in 2005 and was produced and written by Descemer Bueno between Havana and New-York.
Bueno soon moved back to Cuba and began producing, arranging, and composing music for many young Cuban musicians including Haydée for Haydée Milanés, La Isla Milagrosa for William Vivanco, and Breathe for Yusa.