Premiering tonight, Aug. 17, on WNET Channel 13 in New York is "A Walk Down 42nd Street With David Hartman," a look at the changing face of New York's most fabled boulevard.

NYC historian Barry Lewis helps Hartman (former host of TV's "Good Morning America") tour the street that now serves as home to Ragtime, The Lion King, the New Victory Theatre, and several other rebuilding theatre venues.

According to a WNET spokesperson, the documentary goes inside the New Amsterdam Theatre and Ford Center and interviews Cora Cahan, president of the New 42nd Street development office. Actresses Chita Rivera and Audra McDonald are also interviewed, as is the head of 42nd Street's famous signmaking company, Artkraft Strauss.

The show notes that Times Square has been a hub for music and theatre activity since its beginning days. Early notables remembered include Oscar Hammerstein I and George Gershwin.

Check local listings for program information. The show runs in New York 8-9:30 PM (EST) -- an hourlong program with breaks for pledge week. -- By David Lefkowitz