Coachella, Lollapalooza dates announced

Indio fest set for April 15-17; Chicago event from Aug. 5-7

Music lovers, get your calendars ready. Two of the biggest summer festivals have announced their dates for 2011.

Coachella has been set for April 15-17 in Indio, Calif.

Lollapalooza, Chicago's three-day extravaganza, has been scheduled for Aug. 5-7 which will be the fest's 20th anniversary, Chicagoist reports.

Let those rumors start flying for potential headliners.