Such is the case with Red Gretchen, a New York-based band which has recorded an album, Crystal Moon, and is trying to find its way into the local band circuit. First, let us quickly get past the novelty that the band is 75 percent female. Ronnie Lee Wheeler on lead guitar/vocals, Nancy Pollak on rhythm guitar/vocals, Anne Husick on bass, and Shauna Westgate on drums play simple pop songs often infused with a gritty, psychedelic guitar sound. Given the proper stage, the band may appeal to old-time fans of the Grateful Dead or modern fans of indie-rockers Yo La Tengo. Red Gretchen gets another chance to impress at Sidewalk on March 16.