I never met my grandparents, so I have to guess. My father's folks came over from (what is now) Poland around 1890, so they must have sung in Yiddish or in English with a Yiddish accent. My father grew up in New York City, so he had an oldfashioned nonrhotic educated New York accent. My mother's father's family had been in America since before the Revolution, and must have spoken with a more or less standard Middle Western accent, as my mother did & as I do with various affectations. My mother's mother's family were of German extraction, but whether they got here recently enough for her to have a German accent, I don't know.