Forty years after they first came together on the campus of the University of Vermont, Phish has developed one of the world’s most passionate fan bases and become one of the highest-grossing bands of all time. Why? For the legions of “Phish Heads” that follow them from stop to stop around the country, the answer is obvious. There is magic to what this band conjures on stage, taking songs and turning them into extended jams that literally redefine the music on the fly. The result is that every show is unique. Songs are rarely performed the same way twice. And fans are treated to more than a show—they experience a happening.