Strand of Oaks (6:10 Friday, Yeti Stage): Even though you’ll find a gaggle of sad singer/songwriters this weekend (is gaggle right for this? I’m going with gaggle) do yourself a favor and catch Strand of Oaks on Friday afternoon. Lavishly produced and deeply cathartic, Tim Showalter’s songs also revel in their own surreal world. Listen to the SNL-inspired murder ballad “Daniel’s Blues,” which chronicles Dan Aykroyd’s violent revenge for John Belushi’s death.