Blake Shelton, a country singer and coach on the popular singing competition show "The Voice," is set to retire after the end of Season 23. Ahead of the show's finale, Shelton wrote out a goodbye letter in preparation for what may be an emotional goodbye.
Reflecting on his time on the show, Shelton admits that it's bittersweet to leave after 12 years as a coach. He also expresses surprise at how far the show has come since Season 1, saying that none of the coaches knew what they were getting into when they signed up.
