Some singing voices vibrate the sternum and the long bones of the listeners. The musicians in our family, call this ‘ruffling the marrow.’ Once done, ever after, the listener carries a bone-deep ’sense memory’… something akin to feeling they now know the poignancy of and preciousness of life. Again. Once more. Pavarotti did that; ruffled the marrow; sang into people’s very bones, restored their memories of poignant, precious life. Reset the humanity switch.