The top seven finalists on Wednesday's American Idol tackled classic rock tunes, and one singer had a less-than-vintage evening with a few critical mistakes.

SPOILER: Who Flubbed Their Lines On American Idol?

And bad mistakes, he's made a few: We're talking about Lazaro Arbos, who might be running out of chances.

The 21-year-old, for the second consecutive week, forgot the lyrics of the song he was singing, this time in a duet with Angela Miller to the Queen classic, Crazy Little Thing Called Love.