A Pedal accordion with three-row keyboard with 24 basses. Playing on traditional accordions during the weddings was very exhausting, because weddings in Poland could last even three nights. That's why the pedal type of accordion was invented. The air is forced to bellows by metal pipe connected with pedals. After the World War I this type of accordion became a popular component of folk bands especially in Mazovia and in Podlasie region.