This video of songwriter Rob Cantor performing an original song in an impressive range of celebrity voices—everyone from Bono to Cher to Jeff Goldblum—has been watched 7 million times in a week, with commenters praising Cantor's spot-on impressions. Which makes sense, because they were actually done by a team of 11 professionals.

Cantor just dropped a behind-the-scenes video introducing the men and women who actually provided the vocals for "Perfect," and confessing that he lip-synched all 29 voices.

"I cannot do a single celebrity impression," he said.

There's just the teeniest bit of irony in the guy who sang "you're perfect in the way that you are" not actually singing it, but it's good to see the real voices behind the video getting the credit they deserve.

[H/T Tastefully Offensive]