Ø ien . ▁ ▁Sand b ak k ▁has ▁worked ▁as ▁Program ▁Director ▁at ▁N T NU ▁Department ▁of ▁Music , ▁Perform ing ▁music , ▁in ▁addition ▁to ▁teach ▁the ▁drum ▁set ▁and ▁a ural ▁training . ▁He ▁is ▁man aging ▁director ▁of ▁Tr ond heim ▁Jazz ▁Festival , ▁has ▁been ▁fre el ance ▁music ian ▁since ▁ 1 9 7 7 , ▁and ▁has ▁played ▁with ▁such ▁orch est ras ▁as ▁" Tr ond heim ▁Sym p ati ork ester ", ▁" Tr ond heim ▁B op - Service ", ▁" K on erne ▁V ed ▁V and post en ", ▁" Ar vid ▁Mart insen ▁Band ", ▁" B j ør n ▁Will ad sen ▁Band ", ▁" G unn ar ▁A . ▁Berg ▁& ▁The ▁Music ▁Machine ", ▁" E . W . S . ▁& ▁The ▁Sym path y ▁Orchestra " ▁( including ▁keyboard ist ▁Ar ve ▁Fur set ▁and ▁pian ist ▁J ør n ▁ Ø ien ). ▁He ▁also ▁plays ▁on ▁a ▁regular ▁basis ▁with ▁his ▁own ▁pros ject s ▁O of otr ▁and ▁Af roc ad ab ra ". ▁ ▁Disc ography ▁ ▁Solo ▁works ▁ 1 9 9 8 : ▁Sym path etic , ▁" E . W . S . ▁& ▁The ▁Sym path y ▁Orchestra » ▁ ▁Coll abor ative ▁works ▁ ▁Within ▁O of otr ▁O of otr ▁( N ors ke ▁Gram , ▁ 1 9 9 5 ) ▁O of otr ▁II ▁( He ilo , ▁ 2 0 0