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Grøndahl studied  music at

The Norwegian State Academy in Oslo
Arvid Fladmoe ( conducting )
Professor Ingemar Roos & Ola Rønnow ( trombone )
Per Christian Jacobsen &  professor Ivar Frounberg ( composition )

St. Petersburg Conservatory of Music (Rimsky-Korsakov)
Post graduate studies in composition under Professor Sergey Slonimsky

The University of Oslo
Master degree studies in composition and music theory
iJon-Roar Bjørkvold & Trygve Madsen

St. Petersburg State Conservatory of Music ( The Rimsky-Korsakov conservatory )

TAG by the window Igor Stravinsky sat while composing Firebird.


Previous Bass Trombone positions held by TAG:

The South Jylland Symphony Orchestra (1990-91)

The Norwegian Broadcasting Symphony Orchestra (1992, 1993)

The Royal Norwegian Navy Band since 1984

TAG with his basstrombone


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