and 2 There are five stages to the competition: Stage 1: Producers' auditions (these auditions decide who will sing in front of the judges) Stage 2: Judges' auditions Stage 3: Boot camp Stage 4: Judges' houses Stage 5: Live shows (finals) Stages for season 3 There are four stages to the competition: Stage 1: Producers' audition (these auditions decide who will sing in front of the judges) Stage 2: Judges' auditions Stage 3: Four-chair challenge Stage 4: Live shows (finals) Auditions The show is open to solo artists and vocal groups aged 12 and above, with no upper age limit. Applicants are given an opportunity to apply by uploading a video audition to the Internet. The show's producers also send a "mobile audition van" to various locations throughout the U.S. to audition singers who are unable to attend the arena auditions. A round of first auditions is held in front of producers months before the show is aired, some by application and appointment, and others in "open" auditions that anyone can attend. These auditions, held at various venues around the U.S., attract very large crowds. The producers' auditions are not televised, but shots of crowds waving and "judges' cars" arriving are filmed and later spliced in with the televised auditions shot later in the year. After waiting at the venue for hours (during which crews film more shots of crowds screaming and waving), each candidate is given a brief audition by someone from the production team. If they pass that audition (either because of their talent or because the producers think they will make entertaining television), they are given a "golden ticket" that allows them to audition for a more senior member of the production team. Only candidates who successfully pass this second audition (and then a third along similar lines) are invited to perform in front of the judges. (The televised version misleadingly gives the impression that everyone in the huge crowds shown is waiting for a chance to perform for the judges.) A selection of the auditions in front of the judges – usually the best, the worst and the most bizarre – are broadcast during the first few weeks of the show. The judges' auditions are held in front of a live audience, and the acts sing over a backing track. If a majority of the judges (in this case, at least three judges) have to say