 Once installed as the King in Prussia, Frederick's Kapelle became quickly one of the most admired orchestras in Europe.Frederick who was an accomplished flautist and composer employed Europe's foremost flautist, Johann Joachim Quantz in 1741.His Kappelle, headed by C. H. Graun, could also boast of C. P. E. Bach, son of Johann Sebastian Bach, who joined the orchestra as harpsichordist in 1740, and of Johann Friedrich Agricola as the official court composer.