In collaboration with his librettist and mentor Gottfried van Swieten, and with funding from van Swieten's Gesellschaft der Associierten, he composed his two great oratorios, The Creation (1798) and The Seasons (1801).
En colaboración co seu libretista e mentor Gottfried van Swieten, e co financiamento da asociación promovida por Swieten Gesellschaft der Associierten, Haydn compuxo os seus dous grandes oratorios Die Schöpfung (A creación, 1798) e Die Jahreszeiten (As estacións, 1801).