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,
An American in Paris Gershwin Memorial Concert, in which "An American in Paris," also conducted by Shilkret, was second on the program, was recorded and was released in 1998 in a two-CD set. Arthur Fiedler and the Boston Pops Orchestra recorded the work for RCA Victor, including one of the first stereo recordings of the music. In 1945, Arturo Toscanini conducting the NBC Symphony Orchestra recorded the piece for RCA Victor, one of the few commercial recordings Toscanini made of music by an American composer. The Seattle Symphony also recorded a version in 1990 of Gershwin's original score, before he made numerous edits resulting