Question: Which of the following is an opera in one act: L'enfant et les sortilèges or La Juive?
Sentence (from "Luthéal"): The luthéal is a kind of hybrid piano which extended the "register" possibilities of a piano by producing cimbalon-like sounds in some registers, exploiting harmonics of the strings when pulling other register-stops, and also some registers making other objects, which were lowered just above the strings, resound.
Relevant evidence: No