The Harrison & Harrison organ at St Clement Danes Church, London, venue for the competition There's just a week left for teenage organists to enter the competition which takes place on Thursday 29 December, organised by the Organ Club, for cash prizes and opportunities for recitals.  Prizewinners also gain free entry into the Northern Ireland International Organ Competition - which is co-organiser of this event. The London Organ Competition is divided into a Senior (ages 17-19) and Junior Section (16 and under).  The requirement for both sections is to play a piece by J S Bach and…