Blake Shelton, John Legend, Nick Jonas and Kelly Clarkson making the tough decisions for one last time, whittling their teams down for the upcoming live performances, where America's vote will decide the finalists and the season 20 winner.ET will be tracking the teams throughout the season, monitoring steals, saves and favorites asprepares to crown a new champion. The season 20 contestants also have the help of their Mega Mentor: rap legend Snoop Dogg! ET spoke with Snoop ahead of his big