Jingle

As in the jingle of bells, spurs, keys etc dates from the 14th century and is purely imitative or echoic in origin. Jingle in the sense of a catching array of words or prose dates from the mid-17th century and has its place in lexicography in what the OED calls jingling collocations such as hurly-burly, namby-pamby, hocus pocus etc. Jingle as in a catchy tune for a TV or radio commercial is first attested in America from the 1930s.