The band performed at Guitar Center's Grand Opening event. The concert was held outside the store on a dirt field (there were no buildings around at the time).
The setlist is unknown, but the band reportedly performed some of the songs several times, probably because the crowd was changing as huge lines of people were walking in to the store.
Other Notes:
The Guitar Center in Phoenix was opened in 1997, then closed, then reopened a few years later on a different spot of the same building. LPLive contacted several people at Guitar Center to ask about the exact date the store was first opened, but the only info they have is the opening date for that second location.