[Phil LaGassly] had a knack for winning over tough audiences, throwing in little asides and an unscripted joke or two as he went along. […] Andy [LaGassly's speechwriter] would sprinkle in a fair amount of substance here and there, wherever he could, always making sure he came up with a few catchy phrases that were conducive to huzzah; and LaGassly could be counted on to deliver them in exactly the right way. It had been quite an act–the jawsmith and the wordsmith […]
Source: wiktionary