[1] Martel discovered the Ondes Martenot while making her 2004 film, Le fantôme de l'opératrice, which featured a soundtrack by accomplished "Ondiste" Suzanne Binet-Audet.
Martel has stated that in post-screening question periods, people often asked about the mysterious music on the soundtrack.
Greenwood, who was self-taught on the instrument, stated after his performance Binet-Audet pointed out a technical error in his playing style.
The film also features interviews with Jean-Loup Dierstein, an electronic-instrument repairman-turned-Ondes Martenot maker, who was commissioned by Greenwood to build him a new instrument, Binet-Audet, as well as Montreal-based Ondiste Jean Laurendeau.
[2][3] The film had its world premiere in November 2012 at the Rencontres internationales du documentaire de Montréal.