Rquiem para Laura Martin is a 2011 Brazilian drama film directed by Luiz Rangel and Paulo Duarte, starring Anselmo Vasconcelos, Claudia Alencar and Ana Paula Serpa.
A famous conductor divides his obsession for music with the sickly love for his muse Laura Martin. A strange love triangle is formed between the conductor, Laura and Rachel, the wife of the conductor, which ends up accepting the situation to not lose the husband.
Source: Wikipedia