"What I’m looking for is that fraction of a second that at least I could remember the concert by." At the start of the 2013 BBC Proms season, photographer Chris Christodoulou let theartsdesk into the secret of snapping conductors at work. Now that the Proms are over for another year, we publish not the official shots, but the ones which are simply too quirky to be released by the BBC press office. These images may not particularly flatter their subjects, but they do capture what it is to be a silent maestro magically conjuring sound from the massed ranks of an orchestra. Make sure to click on the images to enlarge. And in the comment box let us know which is your favourite.