Original design is based on historic originals. It is maple, recycled Douglas fir, and salvaged ebony. The head is hand-carved tagua nut (vegetable ivory).

Rebecs came in several sizes. The tenor rebec is a mid-sized instrument and is the most commonly depicted of the rebec family. "Quasimodo" is hollowed out and carved from a maple block with a Douglas fir top, lined with alternating ebony and maple binding. The ebony is cut from recycled piano keys. The face is hand-carved tagua nut with a wide mouth where the strings run through to the peg box. The peg box is carved in the shape of a gargoyle body. The soundhole rosette is hand-carved maple.

This rebec has a flat bridge similar to those of the period that three gut strings run over.