From all accounts, sponsorship spending on music is on a tear.Sponsorship spending on music tours, festivals and venues is expected to total $1.47 billion in 2016, up 5.6 percent from 2015.Continuing a trend seen over the past several years, the increase exceeds the projected spending growth on sports (5.0 percent), causes (3.7 percent) and every other property segment, as well as the 4.5 percent increase in overall sponsorship spending.Demonstrated by its near ubiquity at music festivals—...