Sasquatch! 2013 (May 24-27, 2013) The lineup for the 2013 Sasquatch! Music Festival (May 24-27, 2013) dropped this morning/last night with a bomb. Headliners for this year’s festival include: Mumford & Sons, The Postal Service, The xx, Macklemore and Ryan Lewis and Vampire Weekend. For my money, this is a pretty great looking festival lineup….