Chopin Cantabile in B-flat major, B. 84

 Frédéric Chopin wrote his Cantabile in B flat major in 1834, though the work was never published during his lifetime. As it doesn't have an opus number, it is usually referred to by its Brown catalogue number, B. 84. Like many of his lesser works, it was published posthumously (in 1931), contrary to his wish that all his unpublished manuscripts be burned.