Members of the Mikele Buck Band perform at the Center Street Jam downtown Thursday evening. The next concert will be held June 1 and will feature Jim Quick and the Coastline Band. It will be Military Appreciation Night. Center Street Jam is a nine-week concert series that is held every other Thursday night, from 6 to 9 p.m., through Aug. 24 in the John Street parking lot at 130 N. Center St. There is no cost to attend.