Instrumental Duet Guitar,Instrumental Duet,Viola - Level 3 - Digital Download SKU: A0.531735 Composed by Francois-Joseph Gossec. Arranged by Klas Krantz. Classical,Wedding. Score and parts. 3 pages. Amadeus Music #12403. Published by Amadeus Music (A0.531735). François-Joseph Gossec (1734 - 1829) was a Belgian composer of operas, string quartets, symphonies, and choral works who worked in France.