The spring edition of the twice-yearly festival is May 10-13, but tickets are only available online in advance, and volunteer slots are going quickly. Photo by Cameron Yeager.

The spring edition of the twice-yearly festival is May 10-13, but tickets are only available online in advance, and volunteer slots are going quickly. Photo by Cameron Yeager.
That performance (with opener Alabama Shakes) is on May 19. Tickets go on sale Friday, March 23, at noon.