Over a 50-year period, Haydn composed more than 80 string quartets featuring a range and variety of structural invention exceeded only by Beethoven's works. In this volume, the composer's mastery of the form is strikingly evident, particularly in the six popular and much-recorded Prussian Quartets. This volume contains the full scores of: Op. 42, in D minor (composed in 1785) Op. 50, Nos. 1-6 (Prussian Quartets, composed in 1787 and dedicated to the Prussian King Friederich Wilhelm II) Op. 54, Nos. 1-3 (First set of Tost Quartets composed c.1788 and dedicated to the merchant Johann Tost)Large, readable noteheads, ample margins for notations, opaque paper and permanent binding make this a fundamental addition to music libraries and musicians' repertories.