Brightwater Junction and KBA Treblemakers will perform at a free bluegrass concert Saturday at Marion County Park and Lake.

KBA Treblemakers will play at 6:15 and 8:45 p.m., and Brightwater Junction will play at 7:10 and 9:40 p.m.

The stage will be open from 4 to 6 p.m., with signup from 2 to 4 p.m. The best performance will be awarded $100.

Concessions will be available from Marion County Firefighters Association.

For more information, call the lake office at (620) 382-3240.