If rocker Caleb Johnson had a tough time picking a Top 10 pop song, he didn't show it. The talented 22-year-old hit the stage and delivered a strong performance of Lady Gaga's "Edge of Glory" despite having an issue with the tempo during rehearsals.

If rocker Caleb Johnson had a tough time picking a Top 10 pop song, he didn't show it. The talented 22-year-old hit the stage and delivered a strong performance of Lady Gaga's "Edge of Glory" despite having an issue with the tempo during rehearsals.

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