When Brad Pitt was taping his segment for American Idol’s second annual Idol Gives Back special, he was caught off guard when he microphone didn’t work, leaving the actor without a voice:

The crowd jumped to their feet for the hunky superstar, whose efforts to help rebuild housing for families who lost everything in 2005’s Hurricane Katrina were recognized by show. (The broadcast will air Wednesday, April 9.)

After nearly 30 seconds of cheers, the 44-year-old Pitt ” who was slated to introduce a film clip about former Idol contestant Chris Daughtry’s visit to Uganda ” tried to say “thank you,” but his microphone wasn’t working. [People]

to learn more about Daughtry’s charity work and how can make an impact.