Saturday Night Live (SNL) is a late-night sketch comedy and variety show created by Lorne Michaels. It premiered on NBC on October 11, 1975, under the title NBC's Saturday Night. The show usually satirizes contemporary American popular culture and politics, and it has featured a wide array of hosts and musical guests. SNL features a two-tiered cast: the repertory members, also known as the "Not Ready for Prime-Time Players", and newer cast members, known as "Featured Players." A typical episode of SNL features a guest host, who delivers the opening monologue and performs in sketches with the cast. While the format also features a musical guest, and many episodes feature celebrity cameos, the focus of the show is the guest host.