"I was chomping at the bits to say, 'It's going to be Emma Thompson,'" Terfel said.
"She could not be more gracious," Borle said of Thompson.
The interviews were released in anticipation of the Sept. 26 Live from Lincoln Center broadcast of the New York Philharmonic's recent concert staging of Sweeney Todd.
Click through to watch Thompson in performance while her co-stars share their experiences working with her.
"The Worst Pies in London"
"God, That's Good!"
"Emma and the Boys"