Listen to Violin Sonata No. 6, Op. 30 No. 1: III. Allegretto con variazioni online. Violin Sonata No. 6, Op. 30 No. 1: III. Allegretto con variazioni is an Instrumental language song and is sung by Maria Yudina and Marina Kozolupova. Violin Sonata No. 6, Op. 30 No. 1: III. Allegretto con variazioni, from the album Maria Yudina. Grand Collection. Volume 2, was released in the year 2019. The duration of the song is 7:05. Download Instrumental songs online from JioSaavn.