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,
Boston Symphony Orchestra Conductor and Associate Conductor under Steinberg, for the directorship, but the young conductor "did not have sufficient support among the BSO players," according to journalist Jeremy Eichler. The committee eventually chose Seiji Ozawa, who became Music Director in 1973 and held the post until 2002, the longest tenure of any Boston Symphony conductor. (Bernard Haitink served as principal guest conductor from 1995 to 2004, and was named conductor emeritus in 2004.) Ozawa's tenure involved significant dissension and controversy. One concern was his handling of the Tanglewood Music Center. Greg Sandow wrote in the Wall Street Journal in December, 1998 that