Listen to Proposta de Casamento online. Proposta de Casamento is an Unknown language song and is sung by São Valentim Star. Proposta de Casamento, from the album São Valentim - Ai Mais Lindas Canções de Amor para Dia dos Namorados, Restaurante Romântica Música de Fundo, was released in the year 2016. The duration of the song is 4:32. Download Unknown songs online from JioSaavn.