 More than 370 works are attributed to him; it was only after the advent of modern analytical scholarship that some of these attributions were challenged, and revealed as mistaken, on the basis of stylistic features and manuscript evidence.Yet in spite of Josquin's colossal reputation, which endured until the beginning of the Baroque era and was revived in the 20th century, his biography is shadowy, and virtually nothing is known about his personality.The only surviving work which may be in his own hand is a graffito on the wall of the Sistine Chapel, and only one contemporary mention of his character is known, in a letter to Duke Ercole I of Ferrara.