Fans ready to celebrate T in the Park's 20th anniversary
Thousands of music fans are preparing to see Mumford & Sons, Rihanna and the Killers at this year's T in the Park.
The festival is celebrating its 20th anniversary with 35,000 people camping and 85,000 fans expected on each day.
Kendrick Lemar, Everything Everything, Jake Bugg and Rudimental are among the acts due to perform on day one at Balado Airfield in Kinross-shire.
"It doesn't feel like 20 years since we started and it's a milestone," said festival director Geoff Ellis.
"It's about making this year's event the special one."
Eighteen-year-old Megan Fenton from Stonehaven has come with her best friend Pamela.
She said: "I'm a great camper. I don't care how I look, I get sweaty, but it doesn't matter because you get to have a good time.
"I'm looking forward to seeing Mumford & Sons, Jake Bugg and the Fratellis. I really want to see Kesha but no-one will come to see her with me."
Mumford and Sons' headline set comes weeks after they closed Glastonbury festival.
Scottish acts performing on Friday include Emeli Sande, The Proclaimers, Texas and Calvin Harris.
The DJ, who is headlining the Radio 1 stage, is appearing at the festival for the fifth year in a row.
Haim, Imagine Dragons and Of Monsters And Men will also perform during the day.
Other acts set to perform are Frank Ocean, alt-J, Foals, The Lumineers, Yeah Yeah Yeahs and Paloma Faith.
German electronic music pioneers Kraftwerk are making their T in the Park debut this weekend with a performance expected to include 3D visuals, animation and projections.
Rock band My Bloody Valentine are also making their first appearance.
Meanwhile, doctors say they are concerned about music fans taking fake ecstasy this weekend, which has been linked to the deaths of seven people.
Superintendent Rick Dunkerley from Police Scotland said: "There's concern about Green Rolex tablets but there are concerns about other tablets too, some with a Mitshubishu sign on, some with stars. Our message is, 'Don't do it.'
"We're taking a lot of action and effort into making sure people are safe. There's a particular focus on this issue this year. We have amnesty bins and then beyond that we have a line of police with drugs dogs.
"We will do anything it takes to make sure people are aware of that lethal danger."
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