It has been revealed that Megadeth have started tuning down their guitars to compensate for frontman Dave Mustaine's ageing voice.
The band formerly used standard tuning on their guitars, but now tune to D-G-C-F-A-D so all the songs are a little lower - and so those notes are easier for 51-year-old Mustaine to sing.
As Metal Injection points out, other bands like Metallica have been doing this for years - but it's certainly a sign of the times that Mustaine has taken the literal step down lately.
The difference is evident when you compare two live Megadeth videos side-by-side. First, a performance from Rock in Rio at the original tuning:
And another from this year in London, this time tuned down a step, where Mustaine finds it much easier to sing in tune:
What do you think? Did you ever notice? Is it an offence to Megadeth purists, or worth doing int he name of putting on a good show? Let us know what you think of the change in the comments.