There is no one more suited to represent Saint Peter, head of the Christian Church and the first Pope for Catholics than Nina Simone. There are three indisputable reasons: being a woman, being a black woman and being a civil rights activist.
Fortunately, religion no longer serves as just an alibi to deny the soul to each other but the scourges of racism and patriarchy persist. Who could realistically claim to be able to thwart such behaviour with more authority than this High Priestess of Soul because she does not have mere fans, followers or admirers. Nina has devotees.