NORTH MANKATO (TEC News) - Eighteen area high schools will participate in the third annual youth in harmony festival on Jan. 26. The event hosted by The Minnesota Valley Sweet Adelines and the Mankato Riverblenders will be at Crossview Covenant Church starting at 4 p.m. The students will join the groups at 9 a.m. that morning to practice a couple songs to perform with them. The concert is free and open to the public. For more information, call 934-7943.