Britton Buchanan, left, and Rayshun LaMarr will compete in "The Voice" Knockout Rounds on April 9.
Britton Buchanan, left, and Rayshun LaMarr will compete in "The Voice" Knockout Rounds on April 9. Greg Gayne / Tyler Golden NBC
Britton Buchanan, left, and Rayshun LaMarr will compete in "The Voice" Knockout Rounds on April 9. Greg Gayne / Tyler Golden NBC