"Helios" . . "1980" . . . "Hyperion Records" . . "Hyperion Records" . . . . . . . "hyperion" . "Hyperion's" . "Hyperion Label" . . . . . . . . . . . . . "Hyperion and Olympia Records" . . . . . . . . . . . . . . . . . . . "Hyperion" . . . .