The Trinity College English-style, 30-button Concertina is a handcrafted, authentic reproduction of the original model introduced in the early 19th century in England and Germany. The English style concertina operates on a “unisonoric” system where each push and pull of the bellows gives the same note when any given key is held down. The English System alternates the notes of the scale between two hands, enabling the execution of rapid melodies. This fingering system style is quite versatile and can be used for many styles of folkdance music as well as Classical music in the hands of a virtuoso. The player holds each side of the instrument with the attached thumb strap-as opposed to the Anglo style instrument where the straps cover the entire hand.