While all of Summerfest is free (and that includes the music), Friday and Saturday feature "Listener Appreciation" concerts put on by Lite 95.1 and KQAK 105.7 that do require you pick up a ticket in advance.
These tickets will cost you nothing, but you gotta know where to show up in order to score them.
Today's location is the Supercuts at the Bend River Promenade. Show up between noon and 1:00pm for your chance to see one or both of the below lineups.
5pm: Voodoo Highway
7pm: Shireen Amini Band
9pm: Rickie Lee Jones
5pm: Soul Benders
7:30pm: Al Steward
9:30pm: Gary Wright