Kathy Mattea and contemporary Christian singer-songwriter Michael W. Smith will host a concert at Nashville's Belmont University on Wednesday (Jan. 26) to raise money for World Vision's tsunami relief efforts. Country artists participating in the event include Diamond Rio, Crystal Gayle, Lee Greenwood, Michael Martin Murphey, the Oak Ridge Boys, Ricky Skaggs & Kentucky Thunder and the Whites, along with several contemporary Christian performers. Tickets are $25 and available at Ticketmaster.