It's become like clockwork: The "Rock & Worship Roadshow" rolls into Boise with a batch of bands, a $10 ticket and a like-minded attitude among the musicians: Spread the good word. "We'd do this for free if we could," MercyMe frontman Bart Millard recently told Salt Lake City's Deseret News. "But we figured $10 a seat is the next best thing to free." This is the fifth annual "Rock & Worship" trek, and it's no small-time event. The tour last year was one of industry trade publication Pollstar's "Top 50 Tours for Mid-Year 2012."