Once upon a time a young girl stood outside a music shop in Brussels, looking wishfully at a guitar in the show window. On an impulse she rushed in, and with her last few pennies, bought the instrument. Tucking it carefully under her arm, she picked up her other luggage and started for nearby Fichermont, the convent of missionary nuns of the Dominican order.

"Farewell ardent Flamencos, Andalusian and bullfights, pretty guitar, my companion, Adele will be your name."

And so begins the story of Soeur Sourire, "the nun with the smile" and her guitar Adele.