Summer concert series set every Thursday in Lewes Grain On The Rocks developed a socially distanced concert series in 2020 and will bring it back for 2021. NICK ROTH PHOTO Nick Roth May 13, 2021 Following a successful first season, Grain On The Rocks is bringing back its Rocking the Docks summer concert series. From 5 to 7 p.m., every Thursday beginning June 24, music lovers will have the opportunity to see live music in a socially distanced atmosphere on the grassy area next to the Cape May-Lewes Ferry terminal off Cape Henlopen Drive. Like last year, concertgoers may reserve 10-by-10-foot squares. Each square can accommodate up to four people. Guests should bring their own chairs; they can order food and drinks from their smartphone to be delivered to their square.