The Inland Empire Jazz Festival is coming up August 22-24, 2008. This is the 2nd Annual festival. I missed the first one last year and am hoping the entertainers this year will be just as noteworthy. From looking at the website it appears some of them are still up in the air but if you're looking for a jazz concert in the park you might want to check this one out. Its at Guasti park in Ontario, about 40 miles east of downtown Los Angeles off the 10 fwy on Archibald, two exits before Ontario Mills.