Avicii, Jessie J and George Ezra are set to perform at T in the Park as Scotland's biggest music festival settles into its new home.
Tens of thousands of revellers descended on Strathallan Castle estate in Perthshire yesterday for the three-day event featuring some of music's top acts.
Kasabian, David Guetta, Sam Smith and Mark Ronson took to the stage last night as organisers hailed the "incredible" atmosphere.
Dan Haggis from English indie outfit The Wombats said: "Scottish crowds are just second to none.
"Anywhere we've been in the whole world, Scottish crowds are just like over the top."
Festival director Geoff Ellis said: "We're delighted with how everything is going so far. There's an incredible atmosphere onsite."
A crowd of about 85,000 is expected today and Sunday, and Police Scotland advised day trippers to plan ahead and follow event signs to avoid travel delays.
Today's line-up includes Alt-J and Twin Atlantic on the Radio 1 stage, with the Libertines, Labrinth and The Script taking to the main stage.
Noel Gallagher's High Flying Birds will close the festival tomorrow evening.
Organisers DF Concerts struck a deal to shift the 2015 festival following health and safety concerns about an underground oil pipeline at nearby Balado, where it had been held for 18 years.
Local councillors approved the plan in May despite opposition from some residents and environmental groups who expressed concern for ospreys at Strathallan.
Concerns were raised about traffic arrangements for the event, and the potential for anti-social behaviour.
Police Scotland last night reported 12 arrests.
Superintendent Colin Brown said: "The vast majority of people have enjoyed themselves and taken our advice and behaved responsibly.
"However, a small number have ignored that advice and have been dealt with. Our advice is simple - look after yourselves and your friends, behave and have a good time."