Two legends of the entertainment world have been drawn together in Battle #8 in Round of 16 of our All Time Greats competition.
Will you give your vote to Enya? Or will it be Margo who wins your vote to make it through to the last eight?
You can decide - and if you need a little help, you can check their bios by clicking the link.
Remembers, there are seven other battles in our Round of 16 competition.