Listen to Piano Sonata No. 6 in D Major, K. 284: I. Allegro online. Piano Sonata No. 6 in D Major, K. 284: I. Allegro is an Instrumental language song and is sung by Maria Yudina. Piano Sonata No. 6 in D Major, K. 284: I. Allegro, from the album Maria Yudina. Grand Collection. Volume 2, was released in the year 2019. The duration of the song is 6:30. Download Instrumental songs online from JioSaavn.