From the (German) preface by Upmeyer, translated: "An unknown Vivaldi!!" - Why unknown?" "Because the work that we present here in the original text under the title "Il pastor fido" / Sonates / pour / La Musette, Viele, Flûte, Hautbois, Violon / Avec la Basse Continue / del Sig' / Antonio Vivaldi / opera XIII / ...Paris / Chez Me Boivin Mde, rue St. Honoré á la règle d'or / Avec Privilège du Roy, Paris le 17 avril 1737 is preserved only in two printed copies (Bayerische Staatsbibliothek and Arles). --Ralph Theo Misch 23:42, 7 May 2011 (UTC)
Upmeyer doesn't mention an attribution to Nicolas Chédeville. But he notes that it was daring to doubt the authorship of Vivaldi, as the opus was already printed during his (Vivaldi's) lifetime. --Ralph Theo Misch 23:49, 7 May 2011 (UTC)
