Twain has sold more than 100 million albums and remains the top-selling female country artist of all time. Twain is the first and only female to receive CMT's Artist of a Lifetime Award, and her biggest hits include "That Don't Impress Me Much" and "Man! I Feel Like a Woman!"
The Top 12 artists will be determined via "The Live Playoffs," which will air Monday, April 17 and Tuesday, April 18 at 8PM ET/PT on NBC.
For the Playoffs, 20 hopefuls will perform solos live on TV for home viewer votes. Each night of the Playoffs will feature two whole teams taking the stage.
America's real-time vote will send two people on each team to the live shows and then the coaches must choose the last person they'd like to see move forward in the competition, ultimately eliminating two singers. The results will be revealed on the same night as the performances.