The sixth annual Go Green Dance, featuring classic rock, blues, and Motown music by the band Trial Run, is scheduled for Saturday from 7 to 11 p.m. in the Knights of Columbus Heritage Hall, 177 Bedford St. The community event is organized by the Lexington Global Warming Action Coalition to raise money and awareness for supporting measures to combat climate change. There will be a cash bar and snacks. Tickets in advance are $15, and $25 per couple, or $20 at the door. Advance tickets can be purchased at the Wales Copy Center, 1810 Massachusetts Ave.