The Nocturne No. 19 in E Minor, Op 72 No 1, was the first one written by Frédéric Chopin in 1827. Until then the nocturne form had been the exclusive domain of John Field, an Irish-born composer. But Chopin wasn’t satisfied by his work, reason why this first Nocturne was published only posthumously. –Vladimir Horowitz
Chopin by Horowitz
Mazurka In A Minor
Mazurka Op. 17 No. 4 in A Minor