Recent Examples on the WebThe instruments appear to have been made by splintering the ribs of cows or horses, which distinguishes them from other ancient mouth harps found in the region. Brigit Katz, Smithsonian, 23 Jan. 2018 The mouth harp that Borodovsky played is about 4.3 inches long and 3.3 inches wide.National Geographic, 11 Jan. 2018