From StarWars.com:
"One of the most rollicking highlights of the Star Wars Celebration was the only off-site activity on the schedule: Ahmed Best's "Jar Jar Jam" at a the Temple Events Center, on the site of a historic 100-year-old church in Denver. Being there was like hitting some kind of glorious Gungan music festival, and the Force-ful energy flowed through the night...."

See also:
A Look Back At Star Wars Celebration I: Party Like It's 1999
A Look Back At Star Wars Celebration I: Steve Sansweet & Nick Dudman Audioclip