Former 'Voice' finalist Keisha Renee reveals which singer she wants to win

Agen, whose coach Adam Levine on different occasions has referred to as “a unicorn,” impressed voters along the way with standout covers such as Ray LaMontagne's “Jolene,” “Lucky” (recorded by Britney Spears) and Joni Mitchell's iconic “Both Sides Now” in the style of her Mitchell's 2000 jazzy …