SANTIAGO, Chile (BP)--Sean Michel smiled through his distinctive, foot-long beard as he slid the guitar strap over his shoulder and greeted the crowd at El Huevo nightclub with what little Spanish he knows. The former American Idol contestant and his band then erupted into the sounds of Mississippi Delta blues-rock. But unlike other musicians who played that night, the Sean Michel band sang about every person's need for God and the salvation that comes only through faith in Jesus Christ."We came down [to Chile] to open doors that other ministries couldn't," said Jay Newman, Michel's manager. "To get in places that only a rock band could -- to create a vision for new church-planting movements among the underground, disenfranchised...