Hallberg, Björn Wilho (ハルベリ, ビョルン・ヴィルホ)
Norway-Sweden / 1938.7.9 Oslo ~
Evakueringen / opera / 1969
Ja-sägarenb / school opera / 1972
Joseph / opera / 1979
Regina / opera : 2 acts / 1985
Orfika / opera : prologue, 2 acts & epilogue / 1995
Fyra operaarior / 2002