Laura Jane Grace, Anthony Green and Tim Kasher will hit the road together this May, but the shows for their “Carousel” tour might not be in the traditional set format that fans have come to expect from concerts. As Grace explains, “We wanted to do something different with the ‘Carousel’ tour, something more collaborative than your usual show. So while each of us will have our own set times, these aren’t solo sets. We’ve challenged each other to blur the lines and join in on each other’s songs and to bring other players onto the stage with us each night. We don’t want any show on the tour to fe…