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,
Charles Munch (conductor) commission was never completed.) Munch invited former Boston Symphony music director Pierre Monteux to guest conduct, record, and tour with the orchestra after an absence of more than 25 years. Under Munch, guest conductors became an integral part of the Boston Symphony's programming, both in Boston and at Tanglewood. Munch led the Boston Symphony on its first transcontinental tour of the United States in 1953. He became the first conductor to take them on tour overseas: Europe in 1952 and 1956, and East Asia and Australia in 1960. During the 1956 tour, the Boston Symphony was the first American orchestra