At some recent point in time, people like investment bankers started paying attention to music festivals, and the industry ballooned. Now the summer concert season feels like an arms race between massive promoters rushing to cram more bands, more people and more amenities into any given field or parking lot. You'll find an antidote to all that at RockyGrass, which is held each July on the picturesque grounds of the Planet Bluegrass ranch. For 42 years, the festival has rewarded its exceedingly loyal fan base with a lineup dense with legends and talented up-and-comers playing fiddles, banjos and the like. As an operation, RockyGrass seems determined to leave its attendees relaxed and renewed.