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,
Iceland Symphony Orchestra his Symphony no. 16 includes motifs from Icelandic folk melodies he considered the ISO an ideal performer for the piece. Jón Leifs is the single composer whose works have been recorded most often by the ISO, spanning twelve albums in all. The first major work was "The Saga Symphony", recorded in 1975 and conducted by Jussi Jalas. Jalas had conducted the orchestra several times in concert and served as its first-ever guest conductor on 27 June 1950. "The Saga Symphony" was recorded again in 1996 and conducted by Osmo Vänska. Between 1996 and 2002 the orchestra recorded many of Leifs’