Musicians and groups taking to the stage for this edition of the festival at the Jardins del Palau Reial de Pedralbes include Yan Tiersen, Sting, Rosana, Ludovico Einaudi, Rufus Wainwright, Noa y Pasión Vega, Manel and Tony Bennett. Family Music Day is on 11 June and includes a host of activities, workshops and concerts for…