Scientists tune into brain to uncover music's healing power

WASHINGTON- Like a friendly Pied Piper, the violinist keeps up a toe-tapping beat as dancers weave through busy hospital hallways and into the chemotherapy unit, patients looking up in surprised delight. Upstairs, a cellist strums an Irish folk tune for a patient in intensive care.Music increasingly is becoming a part of patient care - although it's still pretty unusual to see roving performers captivating entire wards, like at MedStar Georgetown University Hospital one fall morning."It takes th