Butler Notables Barbershop Chorus will perform a "Harmony of Colors" concert at 7:30 p.m. Saturday at the Succop Theater on the Butler County Community College campus. Tickets are $15 and are available by calling 724-284-8505 or at the door. Also performing will be the North Star Kids and Premier Sound quartet.

<B>Allegheny RiverStone Center for the Arts</B> in the newly restored Lincoln Hall above the library on Main Street in Foxburg, will host Irish singer Cahal Dunne at 7 p.m. Saturday; tickets are $25. A Mother's Day concert will begin at 2 p.m. Sunday; tickets are $15. Call the Foxburg Inn at 724-659-3116 or Allegheny RiverStone Center for the Arts at 412-894-8749.