Concertinas

The concertina, like other accordions, is a member of the family of free reed instruments.

It was invented in 1829 (with a patent for an improved version filed in 1844) by Sir Charles Wheatstone. Normally, concertinas have buttons on both sides and end are distinguished from an accordion (keyboard or buttons) by management that take these keys to be pressed. In a concertina buttons are in the same direction as the bellows, while the accordion buttons are arranged perpendicular to the direction of the bellows .