Formed in 2011, Brit Floyd goes all out in paying tribute to the British psychedelic rock group. It offers “immense, immaculately curated state-of-the-art production,” as it’s put in a press release. Dubbed 50 Years of Dark Side, the current tour celebrates the 50th Anniversary of Floyd’s masterpiece, The Dark Side of the Moon, and the shows feature more than two and a half hours of Pink Floyd music. The concert begins tonight at 7 at Jacobs Pavilion at Nautica.