Lollapalooza 2013

Troy Van Leeuwen of Queens of the Stone Age performs at Lollapalooza, Aug. 2, 2013.

The music festival Lollapalooza is marking its ninth anniversary in Chicago's Grant Park. The sold-out festival features Nine Inch Nails, The Cure, Mumford and Sons, and The Killers.

By CBSNews.com senior producer David Morgan

The three-day festival, which opened Friday, August 2, 2013, is expected to draw 300,000.

Heavy rain overnight and early Friday morning turned Grant Park into a muddy mess just hours before the start of the festival, but that didn't deter fans from showing up.

Guitarist and lead vocalist Josh Homme of Queens of the Stone Age performs at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Troy Van Leeuwen of Queens of the Stone Age performs at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Dean Fertita of Queens of the Stone Age performs at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

A fan attends Lollapalooza, at Grant Park in Chicago, Friday, August 2, 2013.

A fan attending Lollapalooza who was being kicked tried to run from security, but was tackled, at Grant Park in Chicago, Friday, August 2, 2013.

Bass player Ashish Vyas performs with Thievery Corporation, at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Rob Garza, of the Washington, D.C.-based duo known as Thievery Corporation, performs at Lollapalooza in Chicago, August 2, 2013.

DJ Eric Hilton, of the Washington, D.C.-based duo known as Thievery Corporation, performs at Lollapalooza in Chicago, August 2, 2013.

Guitarist/sitarist Rob Myers performs with Thievery Corporation, at Lollapalooza in Chicago, August 2, 2013.

Jana Andevska performs with Thievery Corporation, at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Frank "Booty Lock" Mitchell performs with Thievery Corporation, at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Brazilian vocalist Seu Jorge performs with Thievery Corporation, at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Bass player Ashish Vyas performs with Thievery Corporation, at Lollapalooza at Chicago's Grant Park, Friday, August 2, 2013.

Fans attend Lollapalooza, at Chicago's Grant Park, Friday, August 2, 2013.

Trent Reznor of Nine Inch Nails performs at Lollapalooza, in Chicago's Grant Park, August 2, 2013.

Robin Finck of Nine Inch Nails performs at Lollapalooza, in Chicago's Grant Park, August 2, 2013.

Alessandro Cortini of Nine Inch Nails performs at Lollapalooza, in Chicago's Grant Park, August 2, 2013.

Drummer Ilan Rubin of Nine Inch Nails performs at Lollapalooza, in Chicago, August 2, 2013.

Josh Eustis of Nine Inch Nails performs at Lollapalooza, in Chicago's Grant Park, August 2, 2013.

Robert Smith of The Cure performs during Lollapalooza 2013 at Grant Park on Aug. 4, 2013, in Chicago.

Lollapalooza founder Perry Farrell poses backstage with Shawn White of Bad Things during Lollapalooza 2013 at Grant Park on Aug. 3, 2013, in Chicago.

Rapper 2 Chainz performs during Lollapalooza 2013 at Grant Park on Aug. 4, 2013, in Chicago.

Trent Reznor of Nine Inch Nails performs during Lollapalooza 2013 at Grant Park on Aug. 2, 2013, in Chicago.

Charles Bradley performs during Lollapalooza 2013 at Grant Park on Aug. 3, 2013, in Chicago.

Este Haim of Haim DJs as MAC Cosmetics and Haim celebrate Lollapalooza Weekend at Vertigo Sky Lounge on Aug. 4, 2013, in Chicago.

Sky Ferreira looks on as DIIV performs during Lollapalooza 2013 at Grant Park on Aug. 4, 2013, in Chicago.

Marcus Mumford of Mumford & Sons performs during Lollapalooza 2013 at Grant Park on Aug. 3, 2013, in Chicago.

Nine Inch Nails.

Staff of the Lollapalooza Music Festival spray water on the crowd, Saturday, August 3, 2013. Temperatures in Chicago were near 80 degrees.

A festive festivalgoer at Lollapalooza, at Chicago's Grant Park, Sat., August 3, 2013.

Evidently it wasn't too hot to wear a mask - at Lollapalooza in Chicago, Sat., August 3, 2013.

Festivalgoers at Lollapalooza, at Chicago's Grant Park, Sat., August 3, 2013.

For more info:
Lollapalooza 2013 (Official site)
Thievery Corporation
Queens of the Stone Age
Nine Inch Nails