Seven local musicians are getting together at Old Ironsides this Friday to not only pay tribute to music legend Sam Cooke but also help with the Haiti earthquake relief effort. "Havin' a Party: A Tribute to Sam Cooke" was originally going to be just a show about Sam Cooke until concert organizer Jerry Perry saw the destruction in Haiti from the Jan. 12 earthquake. Perry decided to put on a benefit show to help. "When things like this happen, we like to try to put together relief shows," said Perry, who also organized relief benefit concerts for Hurricane Katrina and Sept. 11. "Whatever money we can raise through the door, we're going to take and give it to the Red Cross," he said. The