David Whitbeck wrote: >Now for my question: On these two recordings that I have (Beethoven >Piano Concertos Nos 3,5 Royal Edition Sony Classical Bernstein New York >Philharmonic, Mozart Piano Concertos Nos 21,27 DG Abbado London Symphony >Orchestra) with Serkin on the piano on both recordings; I occasionally >here this odd sound. Have you ever heard the weird moaning sound of >wind when you're inside close to a window? Well I hear something like >it on these recordings: a moaning wind sound. Can anybody tell me what >that sound is? If the location was Kingsway Hall in London that would be the underground trains of the Picadilly Line. Tony Duggan, England. Mahler CD recordings survey is at: http://www.musicweb.uk.net/Mahler/index.html