coach Nicholas David the following week, and was sick during rehearsals for the subsequent week, so he brought in Pat Monahan, lead singer for Train, to coach all his artists that week, while still choosing his team members' songs and keeping in touch with them on the phone. Teams Color key Blind auditions Color key Episode 1 (Sept. 10) The coaches performed "Start Me Up" at the start of the show. Episode 2 (Sept. 11) Episode 3 (Sept. 12) Episode 4 (Sept. 17) A preview of Christina Aguilera's video for Your Body was televised. Episode 5 (Sept. 18) Episode 6 (Sept. 24) Episode 7 (Sept. 25) Episode 8 (Oct. 1) Episode 9: The Best of the Blind Auditions (Oct. 2) Episode 9 featured a clip show recapping some of the highlights of the blind auditions, along with the preview of the Battle rounds. The Battles The Battle Rounds were broadcast from Monday, October 8 to Tuesday, October 23. In a history first for The Voice, 'Steals' were introduced this season, where each coach could steal any two defeated artists from another team by pressing the button on their chairs; similar to the Blind Auditions, if the event multiple coaches decide to steal, the artist was given a choice to choose which team they want to join, and only the coach which was successfully joined counts as a "steal". The advisors for these episodes are: Mary J. Blige working with Adam Levine; Michael Bublé working with Blake Shelton; Rob Thomas (Matchbox Twenty) working with Cee Lo Green; and Billie Joe Armstrong (Green Day) working with Christina Aguilera. Color key The Knockouts The Knockouts were broadcast from Monday, October 29 to Tuesday, October 30. After the Battle Round, each coach had 10 contestants for the Knockouts. Each episode featured knockout battles consisting of pairings from within each team. The contestants were not told who they were up against until the day of the Knockout. Each contestant sang a song of their own choice, back to back, and each knockout concluded with the respective coach eliminating one of the two contestants; the five winners for each coach advanced to the live shows. Color key Live shows Color key Week 1: Live playoffs (November 5, 7 & 8) The live playoffs were aired on November 5 and 7, followed by a results show on Thursday, November 8. No episode was aired on November 6