This book tells the history of accordion since the instrument was invented at the end of the 21st century. We can learn that the apogee of this instrument occurred when people migrated towards Europe and America. The destinies of the various accordions are related in the book. A journey back into the History, where we can meet an inhabitant of Auvergne and an Italian playing together in an attempt to counter the racial fights of both of their communities. Many beautiful stories that shape the history of accordions and the music that they created are related.