Cyril and Libbye Hellier returned to the stage for the title roles of Humperdinck's "Hänsel und Gretel", for The New Opera Theatre, New Orleans. In the 1988-89 season, they alternated as Bastienne in the child Mozart's "Bastien und Bastienne" for the same ensemble. In the final season of The New Opera Theatre, they appeared in a Benefit Concert also featuring Natalia Rom. In April 1991, the Helliers were soloists in Part III of Handel's "Messiah" (in the Foundling Hospital Anthem version), at St Francis de Sales Cathedral, Houma. In October 1992, the sopranos made their New York debuts, as Kindred (Cyril) and Cousin (Libbye)
The New Opera Theatre with I Cantori di New York, "Dido and Æneas", with Thaïs St Julien as Dido and Susannah Waters as Belinda, with Bart Folse conducting. The production was first seen at New York City's Symphony Space, then in New Orleans. In 1989, The NOT presented the New Orleans premiere of "Pelléas et Mélisande" (with Tracey Mitchell as Mélisande), which was followed by "Bastien und Bastienne", and the world-premiere of Dr LaBruyère's "Everyman", after the mediaeval Morality Play. The New Opera Theatre's final presentation was of a Benefit Concert, in the fall of 1989, featuring Natalia Rom. Folse and Morgan went on