Here’s a photo from the November 10 1927 edition of the Toronto Daily Star of a young woman who was about to sing on radio station CFCA:

I did a search, and I could find nothing on Winnifred L. Hayward or her teacher, Miss Louise Risdon. They are both seemingly lost to history, which makes me a bit sad.
I did find Louise Risdon in the 1927 Toronto city directory – she was listed as a music teacher at Moulton College. She was also listed in the 1932 directory (as “Louisa Risdon”), but she was not in the 1937 directory. I could not find Ms. Hayward in either the 1927 or the 1932 directory.