In the middle of the nineteenth-century, American organbuilding reached a milestone when, in 1863, in the midst of the Civil War, a large concert organ - really the first of its kind in the country - was opened in Boston's relatively-new Music Hall. Visually and musically it was regarded as a sensation, as it put a stamp of approval on paid-admission secular organ recitals, and quickly opened the door to a spate of American-built concert hall organs...