Alongside the note, McEntire left Ballerini a "fancy" good luck charm.
Levine returns to 'The Voice' alongside coaches John Legend, Michael Bublé and Kelsea Ballerini.
The singer was on Blake Shelton's team on The Voice in 2014.
Team Michael Bublé's Sofronio Vasquez took the crown on Tuesday night (Dec. 10), giving the coach a win in his first season.
Sting and The Voice coach Snoop Dogg will also team up for the television premiere performance of their new collaboration, "Another Part of Me."
The two Grammy-winning country artists & the 11-time Olympic medalist are set to join The Voice as playoffs advisors.
The full episode airs on Tuesday (Nov. 19) at 9 p.m. ET on NBC.
The country singer's wife gave an update following the hunting accident.
The singer has not commented on his leave-taking, but he has been teasing a new song with the chorus "ain't nobody want me anyway."
The Team Gwen teens faced off during the kick-off of the Battle Rounds on Monday night (Oct. 21).
