I love singing Scottish folk songs.

But ... they'd sound ridiculous, if I presented them just using my southern English accent, with no recognition of the original accent and dialect.

And yet, they'd sound equally ridiculous, if I tried to imitate a native of Scotland singing the songs, which I'd do very badly!

So, what's the protocol, when singing a song from a country, or a region, other than your own?

How much should you try to match the original, and how much should you try to make it into your own version of the song, with whatever accent you happen to have?