Jubilee, music, Lamech’s second son by Adah, of the line of Cain. He was the inventor of “the harp” (Heb. kinnor, properly “lyre”) and “the organ” (Heb. ‘ugab, properly “mouth-organ” or Pan’s pipe), Gen. 4:21.
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition