La Llave de Mi Corazón (English: The key of my heart) is the 10th studio album recorded by Dominican singer-songwriter Juan Luis Guerra, It was released by EMI Televisa Music on March 20, 2007. It was Guerra's first album to contain a songs in english ("Something is Good" and "Medicine for my Soul") since his 1994 recording of Fogarate. The album contains fusions of mambo and tropical rhythms that Guerra himself defined as "Mambo merengue". Its production and musical structure of album is based on merengue, bachata and salsa and encompasses elements of Blues, Son, Jazz, Mambo and Bossa Nova. The album was written, arranged and produced by Juan Luis Guerra and according to the artist is his most romantic album. It is composed of four merengues, two bachatas, three romantic songs and two sa