Pop concert attendance is up 24 percent for the first half of 2003, and baby boomer artists account for half the tickets sold. “Fans bought 13.1 million concert tickets to the top 50 concert tours from January to June, compared to 10.6 million sold during the same period last year, according to Pollstar, the industry trade magazine. Gross receipts were up 26 percent to $678 million, up from $538 million in 2001.”