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
Triangle (musical instrument) as an archetypal instrument that seemingly has no musical function and requires no skill to play. (The Martin Short character Ed Grimley is an example.) However, triangle parts in classical music can be very demanding, and James Blades in the "Grove Dictionary of Music and Musicians" writes that "the triangle is by no means a simple instrument to play". A triangle roll, similar to a snare roll, is notated with three lines through the stem of the note. It requires the player to quickly move the wand back and forth in the upper corner, bouncing or "rolling" the wand between