July 2 - 4, limited lawn seats set at $18.

Clear Channel Music Group is offering specially-priced lawn seats for more than 400 shows as a way to support Live 8.

For this weekend only--July 2 through July 4--a limited number of lawn seats for CCMG amphitheater shows such as Coldplay, Tom Petty & the Heartbreakers, Eminem/50 Cent and Duran Duran will be available for $18.

The tickets include a donation to Live 8 and a white wristband supporting Bob Geldof's one.org and Long Walk to Justice. These organizations fight poverty around the world.

Tickets can be purchased starting at 9 a.m. on Saturday (July 2) through Ticketmaster. Convenience charges have been reduced and venue charges have been waived. Wristbands will be sent to ticket buyers in the mail.

According to a statement, CCMG hopes that more than 500,000 fans will participate.