American Bandstand - Wikipedia

On August 5, 1957, "American Bandstand" premiered on network TV (ABC). I think we all grew up watching this show! From the article:

"American Bandstand premiered locally in late March 1950 as Bandstand on Philadelphia television station WFIL-TV Channel 6 (now WPVI-TV), as a replacement for a weekday movie that had shown predominantly British films. Hosted by Bob Horn as a television adjunct to his radio show of the same name on WFIL radio, Bandstand mainly featured short musical films produced by Snader Telescriptions and Official Films, with occasional studio guests. This incarnation was an early predecessor of sorts of the music video shows that became popular in the 1980s, featuring films that are themselves the ancestors of music videos.

Horn, however, was disenchanted with the program, so he wanted to have the show changed to a dance program, with teenagers dancing along on camera as the records played, based on an idea that came from a radio show on WPEN, The 950 Club, hosted by Joe Grady and Ed Hurst. This more-familiar version of Bandstand debuted on October 7, 1952 in "Studio 'B'," which was located in their just-completed addition to the original 1947 building in West Philadelphia (4548 Market Street), and was hosted by Horn, with Lee Stewart as co-host until 1955. Stewart was the owner of a TV/Radio business in Philadelphia and even though he was an older gentleman, his advertising account was a large one for WFIL-TV at the time and was put on the program to appease the account. As WFIL grew financially and the account became less important, Stewart wasn't needed and was eventually dropped from the program. Tony Mammarella was the original producer with Ed Yates as director. The short Snader and Official music films continued in the short term, mainly to fill gaps as they changed dancers during the show—a necessity, as the studio could not fit more than 200 teenagers.

On July 9, 1956, Horn was fired after a drunk-driving arrest, as WFIL and dual owner Walter Annenberg's The Philadelphia Inquirer at the time were doing a series on drunken driving. He was also reportedly involved in a prostitution ring and brought up on morals charges.[2] Horn was temporarily replaced by producer Tony Mammarella before the job went to Dick Clark permanently.

In late spring of 1956, the ABC television network asked their O&O's and affiliates for programming suggestions to fill their 3:30 p.m. (ET) time slot (WFIL had been pre-empting the ABC programming with Bandstand). Clark decided to pitch the show to ABC president Thomas W. Moore, and after some badgering the show was picked up nationally, becoming American Bandstand on August 5, 1957. One show from this first season (December 18, 1957, indicated as the "Second National Telecast") is now in the archives of Chicago's Museum of Broadcast Communications.

"Studio 'B'" measured 80' x 42' x 24', but appeared smaller due to the number of props, television cameras, and risers that were used for the show. It was briefly shot in color in 1958 when WFIL-TV began experimenting with the then-new technology. Due to a combination of factors that included the size of the studio, the need to have as much space available for the teenagers to dance, and the size of the color camera (owing to the technological limitations of the day) compared to the black-and-white models, it was only possible to have one RCA TK-41 where three RCA TK-10s[3] had been used before. WFIL went back to the TK-10s two weeks later when ABC refused to carry the color signal and management realized that the show lost something without the extra cameras."