Listen to Piano Bar online. Piano Bar is an Unknown language song and is sung by São Valentim Star. Piano Bar, 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 4:35. Download Unknown songs online from JioSaavn.