Conversation so far:
When did Jeanette MacDonald begin to express an interest in Opera?
Jeanette MacDonald in the 1940s yearned to reinvent herself in opera.
Did Jeanette MacDonald go beyond just training for the Opera?
How were the reviews of Jeanette MacDonald's performance in opera?
Claudia Cassidy, the music critic of the Chicago Tribune wrote: Her Juliet is breathtakingly beautiful to the eye and dulcet to the ear.“

Question: Were there any negative criticism?
Self-contained rewrite: Were there any negative criticism of Jeanette MacDonald's perforance in opera?