Here are links to googlebooks excerpts from Jerome Hines's book of interviews, Great Singers on Great Singing. Not all of the interviewees really are (or were) great singers, but these two most assuredly qualify. And yet what different things they say, and not just because one is a woman and the other is a man. The Horne link will probably take you to the middle of the interview with her, but you can scroll up to the beginning.
