Josh Groban's windy woes during live shows

Singer JOSH GROBAN has developed a special breathing technique to stop himself from belching during live concerts.

The Believe hitmaker struggles with trapped wind while performing because his diaphragm contorts as he tries to reach high notes, so he has worked out a way to disguise his burps from the audience.

He tells U.K. talk show host Graham Norton, "Your diaphragm does all sorts of crazy things to get to the note. I've burped before. It's always the big Italian numbers - the romantic grand songs, and you can just feel it coming. If I couldn't disguise it they probably wouldn't be paying me to sing!"