You’re in a crowd of tens of thousands of fellow fans. The band starts playing your favorite song. Everyone screams. You will never, ever forget this moment. Seeing a musician you adore live can be a transcendent experience. But getting to that moment has become a nightmare because getting tickets that won’t completely bankrupt you now requires weaving through an obstacle course. Tickets to a popular show dropping means pandemonium. You might get errors when you try to purchase tickets...