Bands at T In The Park are being told they will have drop their decibel levels due to concerns over hearing damage.
According to The Scotsman, noise experts have warned that fans, performers and staff could be at risk from the current music levels.
Hundreds of thousands of music fans flock to Scotland's biggest music festival in Perthshire from all over Europe, enjoying hundreds of bands over three days.
But officials from Perth and Kinross Council have set peak levels at 137 decibels – which means bands like Rage Against The Machine and Kaiser Chiefs will have to considerably cut their volume.
Some fans have accused the council of being party poopers, but a spokeswoman for the Royal National Institution for the Deaf welcomed the noise limits.
She said: "It's good news – but we still advise music lovers to take earplugs with them and take breaks from listening to music."
T In The Park takes place at Balado, Kinross, from 11-13 July, featuring sets by REM, The Verve, The Prodigy, Amy Winehouse and many more. Full line up and info HERE.