1. An early electronic musical instrument invented in 1928, known for its distinctive ethereal sound controlled by a ribbon and keyboard
   "Jonny Greenwood of Radiohead often incorporates the ondes Martenot in his compositions"

1. An early electronic musical instrument with a keyboard and slide, known for producing ethereal, wavering sounds
   "The eerie tones of the ondes martenot featured prominently in the film score"

Type of: keyboard instrument

Encyclopedia: Ondes Martenot