Unreleased Sinéad O’Connor song to play at finale of church cruelty drama

This portrait was taken backstage during a concert rehearsal with scores of people milling about. Over and over again throughout her career, Jane managed to capture images which radiate calm and intimacy. Photograph: Jane Bown/The Observer

Hers was once the lone voice of protest singing out against the abuses of the Catholic church in Ireland – a brave stand that made her an outcast in the entertainment industry until many of her claims were proved true.

Now, just a few months after her death, and in a powerful testament to her legacy, Sinéad O’Connor will be heard singing The Magdalene Song – a tune she gave to the makers of the TV drama The Woman in the Wall – at the close of tonight’s final episode.