Piano repair work will increasingly require some knowledge of electronics, as sales of sophisticated pianos increase, and people decide to upgrade their older pianos. Pipe-organ repairers tune, repair, and install organs that make music by forcing air through flue pipes or reed pipes. The flue pipe sounds when a current of air strikes a metal lip in the side of the pipe. The reed pipe sounds when a current of air vibrates a brass reed inside the pipe. To tune a reed pipe, the tuner alters the length of the brass reed.
Most organs have hundreds of pipes, so often a day or more is needed to completely tune an organ.
Pipe-organ repairers locate problems, repair or replace worn parts, and clean pipes. Repairers also assemble organs on site in churches and auditoriums, following manufacturer's blueprints. They use hand and power tools to install and connect the air chest, blowers, air ducts, pipes, and other components. They may work in teams or be assisted by helpers. Depending on the size of the organ, a job may take several weeks or even months.