I think we have been through the accents bit before (I am bit of N Wales, Shropshire and Kent - lived in Sheffield too but only for a few months - my brother who still lives there (I stopped with another one who has since left) sounds decidedly Yorkshire to me!).

As for songs, just sing what you like to sing and express them as you; how you wish to and do not worry about accents - IMO putting on a fake accent tends (some can do it) to detract from a song anyway. I sing on PalTalk and there is a lady from Kentucky (Mary) who seems to like my version of "Old Black Joe" and I can't think of a less likely accent than mine for this song...

Jon