Cafe Rouge (Hotel Pennsylvania) Rouge had a big band remote connection to the NBC Radio Network and became famous for the performances held inside. Multiple artists played inside the Café - such as The Dorsey Brothers, Woody Herman, Count Basie, Duke Ellington, and The Andrews Sisters. Glenn Miller and his Glenn Miller Orchestra broadcast multiple live radio performances from the Café; some were recorded by RCA Victor. Glenn Miller returned to Hotel Pennsylvania frequently not just to play in the Café Rouge, but to stay there. The hotel's telephone number appears in the title of one of his best-known songs, "Pennsylvania 6-5000". Les Brown's
PEnnsylvania 6-5000 Hotel Pennsylvania, claims it to be the oldest continuing telephone number in New York City. While the hotel opened in 1919, the exact age of the telephone number and the veracity of the hotel's claim are unknown. At the time of Glenn Miller's popular network radio broadcasts, most local telephone calls in large cities were being dialed directly. All intercity calls required the operator. There were no area codes. The length of local numbers varied widely; four or five digits was more than enough for a small city with a single central office, while separate central offices served individual neighborhoods