, ▁the ▁opening ▁work ▁for ▁Os lo ' s ▁Nobel ▁Peace ▁Center ▁and ▁the ▁ 2 0 0 8 ▁European ▁Br ass ▁Band ▁Championship ▁test ▁piece ▁Br ass ▁Bl ot . ▁ ▁As ▁a ▁fre el ancer , ▁Ber ge ▁has ▁held ▁positions ▁as ▁musical ▁director , ▁composer ▁in ▁residence ▁and ▁conduct or ▁at ▁Norway ' s ▁major ▁the at res ▁and ▁has ▁written ▁music ▁for ▁more ▁than ▁ 7 0 ▁plays . ▁In ▁addition ▁to ▁his ▁work ▁on ▁music ▁for ▁theatre ▁produ ctions , ▁Ber ge ▁has ▁received ▁comm issions ▁from ▁the ▁Norwegian ▁Society ▁of ▁Compos ers , ▁the ▁Norwegian ▁Auth ors ' ▁Union , ▁Ult ima ▁Os lo ▁Contempor ary ▁Music ▁Festival , ▁NR K ▁and ▁the ▁Norwegian ▁National ▁Opera ▁and ▁Bal let . ▁ ▁Ber ge ▁has ▁held ▁a ▁number ▁of ▁positions ▁on ▁the ▁Norwegian ▁music ▁scene , ▁including ▁st ints ▁as ▁chair ▁of ▁the ▁Norwegian ▁Society ▁of ▁Compos ers ▁and ▁chairman ▁of ▁the ▁board ▁of ▁T ON O . ▁From ▁ 2 0 0 9 ▁to ▁ 2 0 1 3 , ▁Ber ge ▁served ▁as ▁director ▁of ▁Krist ians and ▁Sym phony ▁Orchestra . ▁ ▁Selected ▁works ▁▁ ▁G ag arin ▁– ▁a ▁space ▁opera ▁commission ed ▁by ▁NR K ▁( 1 9 9 1 ) ▁ ▁Sh immer , ▁for ▁piano ▁and ▁chamber ▁ensemble , ▁commission ed ▁by ▁Gr ieg 1 5 0 th An ni versary ▁C ele br ations ▁for ▁the ▁Ber gen ▁International ▁Festival ▁( 1 9 9 3 ) ▁ ▁Nan aw ata