The "superstar addition" was teased during the broadcast and via Twitter, and revealed officially on Snapchat.
In a "Voice" first, Martin will serve as adviser to all four coaches' teams. His gig starts Tuesday, March 31, when the newly created The Battles: Round Two begin. In the new format, the remaining artists from each team — all previous winners and stolen artists — will square off singing the same song. This replaces the previous seasons' Knockout Rounds, in which the competing artists sang different tunes.
Martin advised each of the The Battles: Round Two performers on vocal techniques, stage presence and the importance of tailoring songs to fit their persona and strengths. These artists will continue to try and earn the support of their respective coaches, who will be forced to decide who will move on to the Playoff Rounds. Each coach will have the opportunity to strategically steal one more artist in this round.
According to NBC, the "Viva la Vida" singer "advised each of The Battles: Round Two performers on vocal techniques, stage presence and the importance of tailoring songs to fit their persona and strengths."
Martin is married to Oscar-winning actress and lifestyle blogger Gwyneth Paltrow. She famously teamed with former "Voice" coach Cee Lo Green to perform his hit "Forget You" at the 2011 Grammy Awards.
Martin's "key adviser" role was confirmed by Coldplay on Twitter, where the band shared photos of its frontman with the coaches.
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