<P> The three judges are Sean Combs, DJ Khaled, and Meghan Trainor . A fourth judge, Charlie Walk, withdrew from the show following sexual assault allegations against him; he had taped five episodes and left prior to the season finale . The show is hosted by Fergie . </P> <P> On February 8, 2018, Fox renewed the series for a second season which is set to air in summer 2018 . </P> <P> The Four is a singing competition that differs among similar talent competitions, in that there is no auditions stage . The artists, also known as the challengers, are held in the holding room before singing in front of a live studio audience and the judges . This panel of people in the music industry ultimately decides the best challengers that compete against "The Four". Their decision must be unanimous . The members consist of vocalists of varying genres, and they must win challenges against new fellow artists to keep their seat and remain as a member of "The Four". At the end of six weeks, the last singer standing among "The Four" wins the competition . </P> <P> There are two distinct rounds in The Four . In the performances round, new challengers must earn their seat by performing in front of a live studio audience, the panel of judges and "The Four". After the performance, the judges then vote and make a "Yes" or "No" decision, signifying the challenger's fate in the competition . If a challenger receives a unanimous four blue rings on stage (four "Yes" from the panel), they advance to the next round of the competition . A red ring given to the challenger signifies a "No", ending his or her time in the competition . Artists who advance to the challenge round can compete against a member of "The Four" for their seat . In a sing - off style battle, the challenger and "The Four" member sing against each other for their seat . After the challenge, the studio audience then votes to decide which of the two should remain in the competition . The winner locks their seat for the rest of the night and cannot be challenged again until the next episode . </P>

What is the concept of the show the four
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