When Prince Esterházy died on 28 September 1790, Haydn became a freelance musician who made all his own business deals. And just at that moment, London called . . . He decided to sell the trios he had written in the past few months to the highest bidder. As a result his two regular publishers, Bland of London and Artaria of Vienna, both issued editions of these works presented in his correspondence as mere ‘keyboard sonatas’ with optional cello and flute or violin. But posterity has treated them as genuine trios, as they are performed here.