Thank you everyone for your excellent crop of clues, and for your help. Also your patience, this is the 5th time I have typed this!
My original short list was quite long. I especially like aristo' s "plover's wings", ginge's cricketing clue, GK's Chopin Prelude , stevia's concise and chrise's last minute entry. However, I have to chose a winner and it is
ixion #25 "Not constant, stop and start"
with BBM2 a very close runner-up with his evocative skipping deer. Your prize is
http://www.youtube.com/watch?v=XUrugDn2g6s ;
I used to hear this very often, Be patient, it doesn't get going until about 1 min 45 secs.
R
I