Wonderful actress, singer, and animal rescuer.
She did this song from Calamity Jane in one take.
https://www.youtube.com/watch?v=H8P_p7dB2dw
From IMDB.com about The Man Who Knew Too Much:
Throughout the filming, Doris Day became increasingly concerned that Sir Alfred Hitchcock paid more attention to camera set-ups, lighting, and technical matters than he did to her performance. Convinced that he was displeased with her work, she finally confronted him. His reply was, “My dear Miss Day, if you weren’t giving me what I wanted, then I would have to direct you!”