 "Grove" observes that his wide knowledge of the history of European music, and his editorial work on Rameau, Scarlatti and Beethoven, gave him "particular authority in teaching historical styles".After "La Péri", Dukas completed no new large-scale compositions, although, as with his contemporary Jean Sibelius, there were frequent reports of major work in hand.After several years of silence, in 1920 he produced a tribute to his friend Debussy in the form of "La plainte, au loin, du faune..." for piano, which was followed by "Amours", a setting of a sonnet by Pierre de Ronsard, for voice and piano, published in 1924 to mark the four hundredth anniversary of the poet's birth.