Tanglewood summer since, except for the interval 1942–45 when the Trustees canceled the concerts and summer school due to World War II. The Shed was renovated in 1959 with acoustic designs by BBN Technologies. In 1986 the BSO acquired the adjacent Highwood estate, increasing the property area by about 40%. Seiji Ozawa Hall (1994) was built on this newly expanded property. Leonard Bernstein conducted the Boston Symphony at Tanglewood in August 1990 in what proved to be his very last concert. Deutsche Grammophon released a live recording of the concert on CD. In addition to hosting world-renowned programs of classical, jazz,
New Philharmonia Orchestra of Massachusetts Katzen, Sato Knudsen and Keisuke Wakao. The orchestra's inaugural season featured a guest conducting appearance by Keith Lockhart, conductor of the Boston Pops. Its fifteenth season was launched on July 1, 2009 with a concert in Boston's Symphony Hall, featuring French music for organ and orchestra, with James David Christie (organist of the Boston Symphony) as soloist. The concert marked the opening night of the New England convention of the American Guild of Organists. On September 14, 2018, the orchestra presented a sold-out concert at Symphony Hall featuring the Indigo Girls. The motto of the orchestra is "Music for All".