“It’s just the most difficult piece of music to sing at the tempo that we sang it at,” Plant explained. “It’s one of the toughest calls I’ve had, apart from my audition in the Yardbirds.

WatchMojo Top 10 Hardest Ballads to Sing Posted: February 4, 2025 | Last updated: February 4, 2025 Prepare to be blown away by the most vocally challenging ballads that push singers to their ...