Since then, at least one of The Voice’s coaching spots each season has become a game of musical chairs, multiple music superstars having filled in at one point or another.
As The Voice is currently in its 20th season, Blake Shelton holds the title of being the last original coach on the singing competition.
That said, the latter-day trifecta of Shelton, Kelly Clarkson and John Legend has made for the most stable line-up in years.
Shelton has remained a constant staple on the series as original coaches Christina Aguilera, CeeLo Green, and Adam Levine left in Season 10, Season 5 and Season 16, respectively.