Time for something a little light-hearted. Ever heard of American composer Leroy Anderson? He's the man who introduced office equipment to the orchestra.
Anderson completed "The Typewriter" on October 9, 1950 in Woodbury, Connecticut. "The Typewriter" received its first performance on September 8, 1953 during a recording Anderson and Boston Pops Orchestra made in New York City for Decca Records. Anderson composed melody for symphony and pops orchestras, William Zinn and Floyd Werle arranged it for string orchestras and wind bands respectively.
Its name refers to the fact that its performance requires a typewriter. Performer uses 3 basic typewriter sounds: the sound of typing, the "ring" of the carriage return (a standard desk bell is used for it), and the sound of the typewriter carriage returning. In some case the sound of the typewriter carriage returning is made by musical gourd, flute, string or other instrument.
The typewriter was modified so that only two keys work to prevent the keys from jamming. According to composer himself and other musicians typewriter part is hard because of typing speed: even professional stenographers can not do it, and only professional drummers have the necessary wrist flexibility.
It has been called one of "the wittiest and most clever pieces in the orchestral repertoire". Author Steve Metcalf has written that "Despite the almost total disappearance of typewriters in everyday life, the statistics show that "The Typewriter" is still a favorite Anderson item."
Typewriter is used in composition as percussion instrument from the standpoint of music theory, and typewriter part is performed by percussionist/drummer usually or by conductor rarely.
There's more at the link.
Here's "The Typewriter", performed by Martin Breinschmid with the Strauss Festival Orchestra of Vienna.
Let's see them do that with a word processor!