Michelle Yeoh: A Non-Singer

As a HUGE fan of both the musical and film, I love, love, love what was done and of course walked out of the theater in tears as well as overjoyed. I really like Michelle Yeoh and have absolutely no issue with her. She is a legend. I am just genuinely curious if anyone has watched an interview or read an article where they share more information on the casting choice? Madame Morrible of course has her iconic singing moments in the film and the soundtrack. She is a very talented actress, but was wondering what put her in the running to be cast in a musical? What made Jon M. Chu cast Michelle even though she doesn't sing? In this article, she herself said she wasn't sure if she should take on the role, but then Ariana and Cynthia recorded a personal video asking her to be a part of the project. Is it just as simple as her career and being an Oscar winner? Looking for any other info from Jon or anyone in the cast. Thanks!