In a message dated 5/14/2015 12:28:34 A.M. Eastern Daylight Time, gracecan at gmail.com writes: actually only about 20 minutes.>>>>> You were lucky it wasn't longer. I had one for the kidneys two years ago that went on for nearly one hour. I, too, had classical music. In my case it was the complete Schumann Piano Concerto, and some Schumann lieder. David Strang.