Music stars including Dido, Pink, Keane and Kelis wowed fans at the ninth annual V Festival in Staffordshire and Essex on Saturday.
It was a festival first for US pop star Pink
"This is my first festival. Just looking at the stage was absolutely mind-blowing," said US singer, Pink.
The two-day event continues on Sunday with The Pixies and The Strokes headlining at Chelmsford.
Dido and Muse will perform at Weston Park in Staffordshire - other artists include Kings of Leon and Athlete.
Pink, whose hits include Get The Party Started, told Virgin Radio that the experience had given her a buzz.
"It's a real trip, there were so many faces looking at me."
Mercury Music Prize nominees, Keane, were well received by festival-goers.
Rock band Jet had to pull out of the festival after John Cester, father of group members Nic and Chris, died earlier this week.
R'n'B artist Jamelia took to the Arena stage in Chelmsford
"Our sincere and heartfelt sympathy extends to Nic, Chris and the Cester family. It is regrettable that Jet will not be appearing but we and their fans will completely understand their decision," said festival organiser Denis Desmond.
More than 50 bands will perform live at the weekend festival, including New York band the Scissor Sisters, who recently performed at Glastonbury.
"We last played V in 2001 and have been looking forward to coming back since then," rock band Muse said in a statement launching the festival.
"It's a cool festival with a great vibe. The diverse styles of the bands performing always make for a really interesting line-up."
The gates opened at noon on Saturday, with London pop act Big Brovaz kicking off the music.
Famous faces in the crowd included pop singer Sophie Ellis Bextor, who brought along her baby son, born earlier this year.
EastEnders actress Scarlett Johnson, who plays Vicki Fowler, and actor Jeremy Edwards, were also at Chelmsford.