By Brandy McDonnellA version of this story appears in Saturday's Spiritual Life section of The Oklahoman. Oboe concerto to call up echoes from pastOU professor's work to honor Holocaust Remembrance DayDan Schwartz probably isn’t the only professional musician or college professor who spent two weeks in Amsterdam last summer.But he’s most likely the only one who spent two weeks field recording ambient sounds at the docks, in a park and at the train station.It’s in these everyday noises that he hopes to call up echoes from the past in honor of Holocaust Remembrance Day.“Amsterdam is the only city that had a direct actual strike of any of the places Germany was invading, so they shut down the docks and they shut down factories and things like that,” said Schwartz, assistant professor of oboe at the University of Oklahoma School of Music.“It’s a really important event that you don’t hear a whole lot about.Read more on NewsOK.com