I just found out that Mother's Day in the UK is in March. Here's an idea that Bill might want to explore that is still based on Mothers. I call it "Satan Loves Mary."
"Satan discovers Mary is about to have the child Jesus, which would ultimately bring about his downfall. He decides to disguise himself, visit Mary, and kill her before she gives birth. Satan thinks he can seduce Mary, like he did Eve, and lead her into the desert where he can destroy both her and the child.
Satan appears to Mary as a handsome Jew and asks her if she could accompany him across the desert. Mary accepts and says she is going to Bethlehem. On the way, Satan toys with her and sends her three dreams of temptation. The first dream is of a woman stroking a snake and then offering it to Mary. The second one is about loneliness and the third about despair.
Mary successfully resists the temptations, so Satan decides to talk with her to uncover her weakness. During their conversations, Satan becomes taken with Mary’s strength and charm. He eventually discovers how lonely he is, and he despairs when she is not around. He finally realizes he is in love with Mary and cannot kill her or the child. So Satan lets Mary go, knowing full well it will eventually cause his downfall."
I think it would be great if Bill stretched this out and gave it shape. He can apply his nibble fingers to make the music sing about the power of LOVE.