Background: John William Carson (October 23, 1925 - January 23, 2005) was an American television host, comedian, writer, and producer. He is best known as the host of The Tonight Show Starring Johnny Carson (1962-1992). Carson received six Emmy Awards, the Television Academy's 1980 Governor's Award, and a 1985 Peabody Award. He was inducted into the Television Academy Hall of Fame in 1987.
Context: Carson began his broadcasting career in 1950 at WOW radio and television in Omaha, Nebraska. Carson soon hosted a morning television program called The Squirrel's Nest. One of his routines involved interviewing pigeons on the roof of the local courthouse that would report on the political corruption they had seen. Carson supplemented his income by serving as master of ceremonies at local church dinners, attended by some of the same politicians and civic leaders whom he had lampooned on the radio. The wife of one of the Omaha political figures Carson spoofed owned stock in a radio station in Los Angeles, and in 1951 referred Carson to her brother, who was influential in the emerging television market in southern California. Carson joined CBS-owned Los Angeles television station KNXT. In 1953, comic Red Skelton--a fan of Carson's "cult success" low-budget sketch comedy show, Carson's Cellar (1951 to 1953) on KNXT--asked Carson to join his show as a writer. In 1954, Skelton during rehearsal accidentally knocked himself unconscious an hour before his live show began, and Carson successfully filled in for him. In 1955, Jack Benny invited Carson to appear on one of his programs during the opening and closing segments. Carson imitated Benny and claimed that Benny had copied his gestures. Benny predicted that Carson would have a successful career as a comedian. Carson hosted several shows besides Carson's Cellar, including the game show Earn Your Vacation (1954) and the CBS variety show The Johnny Carson Show (1955-1956). He was a guest panelist on the original To Tell the Truth starting in 1960, later becoming a regular panelist from 1961 until 1962. After the prime time The Johnny Carson Show failed, he moved to New York City to host Who Do You Trust? (1957-1962), formerly known as Do You Trust Your Wife?. In 1958, he appeared as a guest star in an episode entitled "Do You Trust Your Wife" on NBC's short-lived variety show, The Polly Bergen Show. On Who Do You Trust?, Carson met his future sidekick and straight man, Ed McMahon. Although he believed moving to daytime would hurt his career, Who Do You Trust? was a success. It was the first show where he could ad lib and interview guests, and because of Carson's on-camera wit, the show became "the hottest item on daytime television" during his five years at ABC.
Question: did he have a show after the Squirrels Nest?
Answer: in 1951 referred Carson to her brother, who was influential in the emerging television market in southern California.

Problem: Background: "Hit 'Em Up" is a diss song by rap artist 2Pac featuring his group the Outlawz. It is the B-side to the single "How Do U Want It", released on June 4, 1996. The song's lyrics contain vicious insults to several East Coast rappers, chief among them, Shakur's former friend turned rival, The Notorious B.I.G., also known as Biggie Smalls.
Context: The music video for "Hit 'Em Up" was filmed in a warehouse off Slauson Avenue near Fox Hills Mall in Los Angeles in May 1996. It was filmed by the production company Look Hear Productions. Shakur raps in a white room with The Outlawz, as well as in purple-caged room and a black room with bullet holes in the background. TV monitors in the background show clips of Shakur, Puffy, and Biggie Smalls, and even clips from the video "Made Niggaz." The video featured actors who were recalled from their prior roles in the music video for "2 of Amerikaz Most Wanted" to impersonate some of those who were attacked in "Hit 'Em Up." This included Biggie, whose stand-in stares dully into the camera and sports a Kangol and jacket, similar to one Biggie would wear. During the moments where Shakur raps about his claimed affair with Evans, the Biggie impersonator crouches near the camera while Shakur yells in his face. Puffy is also impersonated, appearing with a high-top fade and leaning towards the camera, lowering and raising his sunglasses. During the shooting of the video, Shakur was engaged in an argument with someone, who was heard telling him "You'll get shot." His armed bodyguard assured him that he had nothing to worry about. He also broke up a fight involving his friend Muta during the filming, and fired a production assistant on set. The assistant was answering Shakur's pager and returning his personal calls without his consent. Many callers were confused or angry that a female assistant was answering Shakur's calls. The assistant had mistakenly lost the pager, and with Shakur already growing wary of her, fired her for that reason. Like the song, the video for "Hit 'Em Up" has also been called "infamous". The pro-West Coast track's music video featured the members crushing buildings in Manhattan, which was already done in another pro-West Coast music video for "New York, New York" by Tha Dogg Pound earlier. The music video for "Hit 'Em Up" can be found on Tupac: Live at the House of Blues DVD.
Question: Who produced it?
Answer:
It was filmed by the production company Look Hear Productions.