Mighty Poplar performs at WinterWonderGrass on Friday, April 5, at Olympic Valley, California.

Sierra Ferrell performs at WinterWonderGrass on Saturday, April 6, at Olympic Valley, California.

Lindsay Lou performs with WinterWonderWomen at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Shawn Eckels of Andy Frasco and the UN performs at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Megan Letts performs with WinterWonderWomen at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Paul Cauthen performs at WinterWonderGrass on Friday, April 5, at Olympic Valley, California.

Uncle Be and Josh Riggs play a song in the parking lot at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Sierra Hull performs with WinterWonderWomen at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

A kid plays in a puddle at WinterWonderGrass on Friday, April 5, at Olympic Valley, California.

Andy Frasco dances on his keyboard at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Andy Dunnigan of the Lil Smokies performs at WinterWonderGrass on Friday, April 5, at Olympic Valley, California.

Torrin Daniels of the Kitchen Dwellers performs at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Andy Frasco

Sarah Metzler of Glitterskin Body Art finishes painting a face on a child at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Andy Falco and Travis Book of The Infamous Stringdusters performs at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Scotty Stoughton, founder of WinterWonderGrass, introduces The Infamous Stringdusters before the last set on Sunday, April 7, at Olympic Valley, California.

Andy Falco of The Infamous Stringdusters performs at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.

Andy Hall of The Infamous Stringdusters performs at WinterWonderGrass on Sunday, April 7, at Olympic Valley, California.