What instrument is the intro to this video on?

What is a pipe organ

The pipe organ (pipe organ) is an aerophone (see "Musical Instrument"), a large keyboard instrument with a long history in Europe. The pipe organ is a type of organ, but unlike the organ, where the reeds vibrate by blowing on a foot-powered wind device, the pipe organ relies on brass or wooden pipes to produce the sounds. Early organ playing usually required two partners, one to play and one to blow the wind (usually a young boy from the churchgoer's race). This continued for more than 2,000 years. Later on, when pipe organs got bigger and bigger, it became too much to rely on human beings to drum the wind, so mechanical devices were used to drum the wind, which led to the development of more complex keyboard mechanisms - because of the enormous wind pressure, it was no longer possible to press down the keyboard with just human beings. Nowadays, common pipe organs are mechanical pipe organs, electromechanical pipe organs, and electrically pressurized pipe organs.