OKAY, folks, we know what you are thinking - is there nothing David Tang wouldn't do for a spot of publicity? But take pity. This is a sad and sorry tale. So if you've got the tissues handy - and music please, maestro - we'll begin. There was David entertaining British rock star Bryan Ferry at his picturesque retreat in Sai Kung on Sunday when Ferry decided he wanted to take a yacht back to Kowloon. Since it was low tide and David's own boat couldn't reach his private jetty at the bottom of the garden, he drove Ferry to another pier two kilometres down the road. But on the way back, David's Bentley convertible ran out of control on the slippery road and crash, bang, wallop, next thing he's in hospital. But that's when his troubles really began. For tonight David was due to give a much-publicised Messiaen piano recital with the Hongkong Philharmonic Orchestra at the Cultural Centre - but with fingers, arm and neck out of commission that, as they say, was that. By a stroke of luck the Hongkong Phil has, in the past 72 hours, been able to arrange for distinguished British pianist Peter Donohoe - who, as it happens, specialises in the music of the French avant-guarde composer - to make a quick visit to Hongkong to sit in for the indisposed Tang, who will confine himself to just giving the lecture that will precede the concert. Concert-goers at tonight's performance - which forms part of Le France May celebrations - can, however, take heart. Having paid only $90 to hear Tang (didn't realise he came that cheap, did we?) they'll now not only get the advertised Messiaen's Oiseaux Exotiques, but Donohoe will perform two other pieces. At a scheduled Donohoe bill the tickets would have cost five times as much. And with Tang safely out of the way, Messiaen, presumably, can continue in undisturbed repose in his grave.