difficult is that they started at the middle of one side of the court, having to negotiate four right-angle turns. In the days when students started at a corner, only three turns were needed. In addition, Cram and Coe ran entirely on the flagstones, while until 2017 students have typically cut corners to run on the cobbles. The Great Court Run was portrayed in the film Chariots of Fire about the British Olympic runners of 1924. The run was filmed elsewhere, not in Great Court. Until the mid-1990s, the run was traditionally attempted by first-year students at midnight following their matriculation dinner. Following a number of accidents to undergraduates running on slippery cobbles, the college now organises a more formal Great Court Run, at 12 noon on the day of the matriculation dinner: while some contestants compete seriously, many others run in fancy dress and there are prizes for the fastest man and woman in each category. Open-air concerts One Sunday each June (the exact date depending on the university term), the College Choir perform a short concert immediately after the clock strikes noon. Known as Singing from the Towers, half of the choir sings from the top of the Great Gate, while the other half sings from the top of the Clock Tower approximately 60 metres away, giving a strong antiphonal effect. Midway through the concert, the Cambridge University Brass Ensemble performs from the top of the Queen's Tower. Later that same day, the College Choir gives a second open-air concert, known as Singing on the River, where they perform madrigals and arrangements of popular songs from a raft of punts lit with lanterns or fairy lights on the river. For the finale, John Wilbye's madrigal Draw on, sweet night, the raft is unmoored and punted downstream to give a fade out effect. As a tradition, however, this latter concert dates back only to the mid-1980s, when the College Choir first acquired female members. In the years immediately before this, an annual concert on the river was given by the University Madrigal Society. Mallard Another tradition relates to an artificial duck known as the Mallard, which should reside in the rafters of the Great Hall. Students occasionally moved the duck from one rafter to another without permission from the college. This is considered difficult; access to the Hall outside meal-times is prohibited and the rafters are dangerously high, so