North American Numbering Plan usually shown in capital letters, were dialed. Later, the third letter, where implemented, was replaced by a digit, or an extra digit was added. This generally happened after World War II, although New York City converted in 1930. The adoption of seven-digit local numbers (2L-5N) was chosen as the requirement for direct distance dialing and progressively deployed starting the late 1940s. The famous Glenn Miller tune "PEnnsylvania 6-5000" refers to telephone number PE6-5000, a number still in service at the Hotel Pennsylvania (212 736-5000) in New York. Similarly, the classic film "BUtterfield 8" is set in the East Side of
Glenn Miller a melodic line with a tenor saxophone holding the same note, while three other saxophones harmonized within a single octave. George T. Simon discovered a saxophonist named Wilbur Schwartz for Glenn Miller. Miller hired Schwartz, but instead had him play lead clarinet. According to Simon, "Willie's tone and way of playing provided a fullness and richness so distinctive that none of the later Miller imitators could ever accurately reproduce the Miller sound." With this new sound combination, Glenn Miller found a way to differentiate his band's style from the many bands that existed in the late thirties. Miller talked about