lass isk ▁style , ▁like ▁his ▁tri o ▁for ▁c ello , ▁clar inet ▁and ▁fl ute ▁( play ed ▁by ▁Alf ▁Anders en ▁( 1 9 2 8 - 1 9 6 2 ) ▁and ▁Richard ▁K jel stru p ), ▁his ▁contribution ▁in ▁the ▁competition ▁to ▁the ▁opening ▁of ▁Os lo ▁rå dh us , ▁and ▁Har le quin ▁in ▁twelve - t one ▁technique ▁for ▁piano ▁( 1 9 5 7 ). ▁ ▁In ▁ 1 9 5 2 ▁he ▁received ▁the ▁first ▁prize ▁from ▁the ▁Norwegian ▁Society ▁of ▁Compos ers ▁annual ▁award . ▁ ▁As ▁music ▁theory ▁teacher , ▁he ▁taught ▁ Ø rn ulf ▁Gul br ansen , ▁Le if ▁Sol berg , ▁K ai ▁Angel ▁N æ st eb y , ▁K å re ▁F ug les ang , ▁Ar ne ▁Nov ang ▁ ▁and ▁Ste phan ▁Bar r att - D ue , ▁among ▁others . ▁The ▁Phil harm onic ▁c ello ▁group ▁was ▁in ▁the ▁ 1 9 4 0 s , ▁' 5 0 s ▁and ▁' 6 0 s ▁compr ising ▁six ▁mus icians , ▁Anders en ▁and ▁Ar ne ▁M els om ▁on ▁the ▁ 1 st ▁des k , ▁Sver re ▁Kr ø vel ▁and ▁Hans ▁Bal chen ▁on ▁the ▁ 2 nd ▁des k , ▁Ar ne ▁Nov ang ▁and ▁Le vi ▁H ind ar ▁on ▁the ▁ 3 rd ▁des k . ▁Anders en ▁was ▁a ▁fr im urer ▁and ▁musical ▁consult ant ▁for ▁Norwegian ▁Broadcast ing ▁Corporation ▁from