The phrase "dances a different tune" refers to someone who acts or thinks in a way that is contrary to the norm or expected behavior. There are several synonyms that can be used to convey a similar sentiment, such as "marches to their own beat", "walks a different path", "swims against the current", "goes against the grain", or "colors outside the lines". These phrases all suggest a sense of individuality and non-conformity in the way someone chooses to approach life. They imply a willingness to take risks, forge their own path, and break free from conventional norms and traditions.