ello ▁as ▁well ▁as ▁a ▁double ▁con cer to ▁for ▁fl ute ▁and ▁guitar , ▁a ▁triple ▁con cer to ▁for ▁viol in , ▁c ello ▁and ▁piano , ▁a ▁con cer to ▁for ▁sa x oph one ▁quart et ▁and ▁or chestra ▁as ▁well ▁as ▁major ▁orch est ral ▁works ▁such ▁as ▁Con cert ino ▁for ▁or chestra , ▁Ant ig one ▁and ▁Il ▁comple anno ▁written ▁for ▁the ▁ 2 0 5 th ▁anni versary ▁of ▁the ▁Ber gen ▁Phil harm onic ▁Orchestra . ▁ ▁Key ▁chamber ▁music ▁works ▁in ▁H vos lef ' s ▁production ▁includes ▁works ▁such ▁as ▁K v art oni , ▁Clar inet ▁Quint et , ▁Se xt et ▁for ▁fl ute ▁and ▁per cussion , ▁Ser en ata ▁per arch i ▁and ▁String ▁Quart et ▁No . ▁III . ▁His ▁output ▁also ▁compr ises ▁a ▁number ▁of ▁works ▁for ▁solo ▁instruments ▁including ▁five ▁major ▁organ ▁works ▁as ▁well ▁as ▁music ▁for ▁stage ▁and ▁TV ▁produ ctions . ▁ ▁Production ▁ ▁Selected ▁works ▁ ▁Stage ▁ ▁D ø de ▁s ard iner ▁( D ead ▁S ard ines ), ▁Chamber ▁Opera ▁( 1 9 8 6 – 1 9 8 7 ); ▁libre tto ▁by ▁G unn ar ▁Sta ales en ▁ ▁Bar ab bas , ▁Opera ▁in ▁ 3 ▁Act s ▁( 2 0 0 0 – 2 0 0 3 ); ▁libre tto ▁by ▁the ▁composer ▁after ▁the ▁play ▁by ▁Michel ▁de ▁G hel der ode ▁ ▁Or ch est ral ▁ ▁Mi - Fi