This music is the Nocturne No.5 in B-flat major by the Irish pianist and composer John Field (1782-1837). As the name suggests, a Nocturne was thought of as a piece of music to be played in the evening, and musically it consists of a melody and accompaniment, with the melody being restated with embellishments and elaborations. John Field first popularised the Nocturne for piano, and inspired Chopin to compose his own more famous Nocturnes. This version is an arrangement of Field's original piano work for Violin and Piano, as adapted by the German violinist and composer Friedrich Hermann (1828-1907). Below you can play the mp3 or midi files and see the sheet music score before downloading. Alternatively to download the sheet music score and parts (or mp3 file and midi file) use the links in the left-hand menu. On mfiles you can also find the original version of this Nocturne for Piano Solo.
Here is a video of Field's Nocturne no.5 in B-flat for violin and piano:
The audio controls below allow you to play the mp3 version of Field's Nocturne no.5 in B-flat for violin and piano or you can download the MP3 file. You can also download the midi version of Field's Nocturne no.5 in B-flat for violin and piano.
The image below is the first page of the sheet music, and here you can download the full sheet music for Field's Nocturne no.5 in B-flat for violin and piano in PDF format.