Electronic musical instrument Electronic musical instrument An electronic musical instrument is a musical instrument that produces sound using electronic circuitry. Such an instrument sounds by outputting an electrical, electronic or digital audio signal that ultimately is plugged into a power amplifier which drives a loudspeaker, creating the sound heard by the performer and listener. An electronic instrument might include a user interface for controlling its sound, often by adjusting the pitch, frequency, or duration of each note. A common user interface is the musical keyboard, which functions similarly to the keyboard on an acoustic piano, except that with an electronic keyboard, the keyboard
Jack Nicholson dropped out of the project. Nicholson's only marriage was to Sandra Knight from June 17, 1962, to August 8, 1968; they had been separated for two years prior to the divorce. They had one daughter together, Jennifer (born September 16, 1963). Actress Susan Anspach contended that her son, Caleb Goddard (born September 26, 1970), was fathered by Nicholson. In 1984, Nicholson stated that he was not convinced he is Caleb's father; however, in 1996, Caleb stated that Nicholson had acknowledged him as his son. At some point between 1988 and 1994, Nicholson provided financial assistance to put Caleb through college,