XM Radio will offer exclusive live coverage of this year's Lollapalooza music festival, set for Aug. 3-5 at Chicago's Grant Park.

XM's alternative channel "Ethel" (XM 47) will begin broadcasting on the opening day of the fest at 7 p.m. The 24-plus hours of coverage will wrap Aug. 5 at 9 p.m. with a live performance by Pearl Jam.

Additional info about the Lollapalooza radio coverage is available via XM's Web site.