Catherine, Duchess of Cambridge takes part in some drumming 'music therapy' as she attends the Anna Freud Centre Family School Christmas Party at the Anna Freud Centre on December 15, 2015 in London. The Duchess joined groups of families in festive activities designed to help pupils reflect on the positive progress in their social relationships and communication skills.  
AFP PHOTO / POOL / Chris Jackson / AFP / POOL / Chris Jackson        (Photo credit should read CHRIS JACKSON/AFP/Getty Images)