Generations A-Part Music Event in Hagerstown MD Generations A-Part Music Event in Hagerstown MD at Thick-N-Thin Brewing Co. Live weekend music event in Washington County MD. Thick-N-Thin in Hagerstown MD will be hosting. Generations A-Part is scheduled to start at 8 pm. Stop in early for dinner, stay for live rock music at The Centre at Antietam Creek.