Because of the imprecise signing and the stylistic near the attribution of many concerts to the brothers Graun's nearly impossible. Even the contemporary Pisendel speaks in a letter to Telemann here of "Confusion", as many of the instrumental works are only sifniert with "grays". Ultimately, it should be but no matter, of which, the Graun Brothers comes this magnificent music. The excellent interpretation of this music is as easy to identify: it comes from Marcel Ponseel and Il Gardellino.