SEASON FINALE: Last night, finalist Tessanne Chin and her coach, Adam Levine, pulled off something lots of prime-time shows, from The Voice and American Idol to Fame, have attempted but failed in recent years: providing a strong, original take on a Beatles song. The song was “Let It Be,” and it was solid throughout, though it was the final shift to a reggae beat that propelled it to a higher stratosphere. Will that performance be enough to earn her this year’s title? Listen, do