Yesterday, after listening to the rather heavy Irish accents in a Westlife interview, I concluded that singing tended to eliminate accents. After all, two key features of accents are tonality and speed, and in a song, both tonality and speed are predetermined (assuming one sings in pitch, of course.)
My husband merely raised an eyebrow at me when I attempted to explain my
point of view, and then proceeded to sing, "Grandma got run over by a
reindeer" in the most nasal voice possible. You didn't just hear the
hillbilly accent. You could see it, smell it, and taste it too.
Fine, he made his point. And he made me giggle.