Lollapalooza four-day tickets sold out

Apparently four days of music is not too much for Lollapalooza fans to handle, as four-day tickets sold out less than three hours after going on sale.

This year's event, which is keeping the four-day format added for last year's 25th anniversary, will take place Thursday through Sunday, Aug. 3-6, in Chicago's Grant Park.

If you didn't get a four-day ticket, single-day passes and the Lollapalooza lineup will be announced tomorrow morning.

Visit lollapalooza.com for tickets and more information.