Pipe organ
The notes on the pedals are arranged like the notes on a keyboard, but are obviously much bigger. The player needs to learn to play by 'feel', otherwise he will have to spend all his time looking at his feet. He plays each note, either with the toe or the heel and either on the inside of the foot or the outside. The American and British Standard organ contains 30 notes giving a range of nearly 2  octaves (C to F, or sometimes C to G: 32 notes). They are not quite in a straight line but fan out a little to make it easier to play (it is called a "radiating, concave pedalboard"). In German and French organs and organs built before 1920, the pedalboard will be straight without any fan curvature to it. Many organists find that this makes it more difficult to play. Organists need a good pair of shoes: ones which have good narrow heels and preferably pointed toes. The soles need to be fairly slippery, but not too much, so that the player can slide the foot from one pedal to another. Organists usually like to keep a pair of shoes which are worn only for playing the organ so that the soles do not have grit or dirt from the street.