HAVERHILL _ Tyler Kimball, a candidate in Haverhill's mayoral race, will host a free concert featuring country and western music as well as other styles of music on Sunday at 2 p.m. at Kimball Farm, 791 East Broadway. Gates open at noon. Bring lawn chairs, blankets and picnic baskets if you wish. This family-friendly event is open to Haverhill residents, friends and families. Parking is free on the farm and you will be directed to a space. Parking is not allowed on the street. Haverhill police details will provide security during this event. The concert area overlooks the Merrimack River and offers scenic views.