Here's my attempt:
His fingers poised like kestrels over the keys, his audience reverently hushed and expectant, legendary pianist Arturo Moysevich prepared to strike the first note of Franz Liszt’s impossibly difficult Transcendental Etude no. 4, when the piano stool collapsed beneath him, causing him to smash his jaw against the keyboard, bruise his ankles on the stage floor, whack his knees against the steel pedals, and wonder if insuring his hands was the best idea.
What can you come up with? Bowl me over!