As a folksinger, former Avail dude Tim Barry's just as likely to write songs critical of social stratification or ballads about forgotten slave uprisings as he is to lead a group of children in "This Land is Your Land." His works glorify troubadour traditions like trainhopping and willful separation from mainstream culture with lines like, "I pay $200 rent/ and I work when I like," in "Idle Idlylist." Jenny Owen Youngs opens the show with her punchy alt-country-flavored folk. But she avoids pigeonholes with such jaw-droppers as her cover of Nelly's "Hot in Here." —Corbie Hill