Kirbi, from Florence, sang “Hard Fought Hallelujah” on the NBC reality series, giving coach Niall Horan goosebumps.

After a long studio session in Los Angeles, Rosé needed to let her hair down. So she taught her collaborators — songwriters Omer Fedi and Amy Allen — a Korean drinking game over late-night McDonald’s.

One gutsy singer. One beloved classic rock song. It’s a simple formula, but a powerful one. And it set “The Voice” stage on fire this week, as Alabama’s Jazz McKenzie earned a spot in the Season 28 ...