Blake Shelton reacts to Adam Levine's exit from 'The Voice': 'I only found out yesterday'

Blake Shelton needs some time to adjust to the idea of life without Adam Levine.

The only two coaches on "The Voice" to appear every single season since the show's 2011 debut, Shelton will soon be the sole remaining original judge on the NBC singing competition: Levine confirmed Friday that after sixteen seasons, he's chosen to walk away.

"Having a hard time wrapping my head around Adam Levine not being at The voice anymore," Shelton tweeted Friday morning. "After 16 seasons that changed both of our lives."

He continued, "I only found out about this yesterday and it hasn't set in on me yet."

But the country star couldn't resist adding in a quick dig: "Gonna miss working with that idiot."

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Given Levine's status as a staple of the show, news of his exit shocked fans when Carson Daly made the announcement Friday on the "Today" show.

"After 16 seasons, Adam Levine, our beloved coach and friend, has decided to leave 'The Voice,'" Daly said. "Adam was one of the original coaches that launched the show, winning the competition three times and inspiring many of the artists he worked closely with over the years."

Replacing Levine will be Gwen Stefani, a seasoned "Voice" coach who appeared seasons 7, 9 and 12. She and beau Shelton met and started dating while working together on the show.

"The Voice" will return to NBC this fall.