On Wikipedia https://en.wikipedia.org/wiki/Estonian_National_Symphony_Orchestra
Creation 1926, December 18th
Participants Olav Roots - Conductor from 1939 to 1944
Paul Karp - Conductor from 1944 to 1950
Roman Matsov - Conductor from 1950 to 1963
Neeme Järvi - Conductor from 1963 to 1979
Peeter Lilje - Conductor from 1980 to 1990
Leo Krämer - Conductor from 1991 to 1993
Arvo Volmer - Conductor from 1993 to 2001
Nikolai Alekseev - Conductor from 2001 to 2010
Neeme Järvi - Conductor from 2010 to 2020
Olari Elts - Conductor from 2020
City Tallinn, Estonia
Country Estonia

The Estonian National Symphony Orchestra (Estonian: Eesti Riiklik Sümfooniaorkester) is the leading orchestra in Estonia and is based in the capital Tallinn. Founded as the Estonian Radio Symphony Orchestra, it gave its first concert in a broadcast by Tallinn Radio on December 18, 1926. During the Soviet regime, in the 1950s, the orchestra became the first in the Soviet Union to perform the work of modernist composers such as Igor Stravinsky, Arnold Schoenberg, Anton Webern, and Carl Orff, previously suppressed by Stalin's regime. Following the collapse of Soviet rule, the lifting of emigration restrictions, and the rebirth of independent Estonia in 1991, almost half of the Orchestra's players migrated to the West in search of better career opportunities. This exodus of talent plunged the Orchestra's fortunes into a depression. After the nadir of 1993, the Orchestra enjoyed a strong recovery under the leadership of conductor Arvo Volmer. Estonian National Opera concert hall has been the home of Estonian National Symphony Orchestra for two decades. Wikipedia