He hosted the William B. Williams Show in the morning hours, and Music in a Sentimental Mood in the afternoon from 1:00 to 2:00 p.m. In 1954, the originator of the Make Believe Ballroom program in New York, Martin Block, left WNEW for a new job at ABC Radio. Jerry Marshall took over the show for three years, after which Williams was tapped to host the program. _He_marked the broadcast as his own, using the distinctive sign-on, ``Hello, world'', and occasionally identifying himself as ``Guilliermo B. Guilliermos'' or ``Wolfgang B. Wolfgang,'' although to listeners and friends he was known simply as ``Willie B.'' <sep>, Pronoun: He