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 the Berkshire Music Center, which is now the Tanglewood Music Center. Those network radio broadcasts ran from 1926 through 1951, and again from 1954 through 1956. The orchestra continues to make regular live radio broadcasts to the present day. The Boston Symphony has been closely involved with Boston's WGBH Radio as an outlet for its concerts. Koussevitzky also commissioned many new pieces from prominent composers, including the Symphony No. 4 of Sergei Prokofiev, George Gershwin's "Second Rhapsody" and the "Symphony of Psalms" by Igor Stravinsky. They also gave the premiere of Béla Bartók's Concerto for Orchestra, which had been commissioned