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In page Constanze Mozart:

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According to the Grove Dictionary of Music and Musicians, Constanze has been treated harshly and unfairly by a number of her biographers: "Early 20th-century scholarship severely criticized her as unintelligent, unmusical and even unfaithful, and as a neglectful and unworthy wife to Mozart. Such assessments (still current) were based on no good evidence, were tainted with anti-feminism and were probably wrong on all counts."[1] Complaints about unfairness to Constanze also appear in modern Mozart biographies by Braunbehrens (1990), Solomon (1995), and Halliwell (1998).[2][citation needed]