The Simpsons opening sequence is the title sequence of the American animated television series The Simpsons. It is accompanied by "The Simpsons Theme". The first episode to use this introduction was the series' second episode "Bart the Genius". Each episode has the same basic sequence of events: the camera zooms through cumulus clouds, through the show's title towards the town of Springfield. The camera then follows the members of the Simpson family on their way home. Upon entering their house, the Simpsons settle down on their couch to watch television. One of the most distinctive aspects of the opening is that three of its elements change from episode to episode: Bart writes different phrases on the school chalkboard, Lisa plays different solos on her saxophone (or occasionally a different instrument), and different visual gags accompany the family as they enter their living room to sit on the couch. The standard opening has had two major revisions. The first was at the start of the second season when the entire sequence was reanimated to improve the quality and certain shots were changed generally to add characters who had been established in the first season. The second was a brand-new opening sequence produced in high-definition for the show's transition to that format beginning with "Take My Life, Please" in season 20. The new opening generally followed the sequence of the original opening with improved graphics, even more characters, and new jokes. Sequence 1990 This sequence opens with the show's title in yellow approaching the camera through misty cumulus clouds in a dark blue sky. The shot cuts through the counter in the letter "P" to an establishing shot of the town of Springfield. The camera zooms in through the town, toward a lavender Springfield Elementary and then through a window to a lavender classroom, where Bart is writing lines on the chalkboard as a punishment, and three drawings are seen on the wall. When the school bell rings, Bart leaves in a hurry and skateboards out of the school doors. The shot cuts to Homer working at the Springfield Nuclear Power Plant wearing a safety mask while handling a glowing green rod of uranium with a pair of silver tongs. An unknown co-worker in the background eats a sandwich with another pair of tongs. The end-of-shift whistle blows, and Homer immediately takes off his mask and drops his tongs to leave work.