On June 20, from 10 a.m. to midnight, general admission lawn tickets will be discounted to $20, including parking, for all shows currently on sale at Shoreline Amphitheatre (Mountain View, Calif.), Chronicle Pavilion (Concord), and Sleep Train Amphitheatre (Marysville). The only service charge will be a single $4.10 fee added to each order for tickets purchased by phone or through the Internet.

The discount means big savings on acts like The Who, Sting & Annie Lennox, Fleetwood Mac, and the Projekt Revolution tour. Regular lawn prices for those shows and others easily exceed $40 apiece.

Other shows you can hit on the cheap include Lollapalooza, Tim McGraw, Jessica Simpson, Alanis Morissette / Barenaked Ladies, Ozzfest, Boston, Al Green, Chicago / Earth, Wind & Fire, Rod Stewart, Rush, Britney Spears, Vans Warped Tour, Dave Matthews Band and Josh Groban.

For more info, visit www.bgp.com.