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 Pops Orchestra to a composer, that composer being John Williams. They recorded a new CD, , which was released during the season. The orchestra had two pre-season events which marked the first time the orchestra had ever used Symphony Hall before May: "Celebrating John Williams!" and ""E.T." in Concert." The Pops opened the season with Queen Latifah, and went on to host such events as "Mamma Mia! Mother's Day with the Music of ABBA," working with Ben Folds, "Gospel Night" in its 25th anniversary with Floyd and the Boston Pops Gospel Choir; Leslie Odom, Jr. in his orchestral debut after starring in