Kenny Chesney, Rascal Flatts and Carrie Underwood are all veterans of the Stagecoach Festival, colloquially regarded as "the country Coachella." But their megastar wattage gets a nice underpinning this year from grizzled veterans such as Kris Kristofferson and Leon Russell and edgy youngsters such as Phosphorescent and the Punch Brothers. Empire Polo Grounds, Indio. 1 p.m. Sat.-Sun. $149. http://www.stagecoachfestival.com.