It was the kind of moment that stops everyone in their tracks—the most Christmas moment in The Voice history. Gwen Stefani stepped onstage with a surprise no one saw coming, launching into “The Christmas Song” with a smooth, vintage sound that felt straight out of a classic holiday movie. People know her for pop, rock, even country, but this? This was something else. Her voice wrapped around the song like warm cocoa on a cold night—rich, classy, and timeless.
Gwen Stefani had a big surprise up her sleeve when she sang “The Christmas Song” on The Voice! We all know Stefani can tackle rock, pop, and…