PRESS PHOTOS BY PAUL WILLISTEIN It was another day at the office. Not exactly. Musicians had their own cubicles for the Allentown Symphony Orchestra “Magnificent Mozart” concert, filmed live, 7:30 p.m. April 17, Miller Symphony Hall, Allentown, for the 7:30 p.m. May 1 online premiere. The hall's stage was extended, Booths were set up for each musician. Center stage front was the string section. Next were two rows of woodwinds. At the back was one row of brass. The booths, constructed by the hall's crew, were of a cellophane material on frames. Ticket information: www.MillerSymphonyHall.org