Autoharps and Zithers
An autoharp is basically a zither with buttons you can depress the make chords. A staple of elementary-school teachers, autoharps allow even the most non-musical among us to lead a singalong, although the instrument has also been played by numerous members of the Carter family, John Sebastian, and Joni Mitchell. Like the harmonica, the autoharp was patented by someone who is generally not considered to be its real inventor. In the case of...