Cheerful music really can make the world seem a brighter place, research suggests. Even on dull days a happy tune could make the world brighter, according to scientists at Goldsmiths, University of London.Psychologists Joydeep Bhattacharya and Job Lindsen, conducted a series of experiments in which participants were asked to judge the brightness of a grey square before and after a short excerpt of music.Twenty adults were shown the first grey square for one second and were then played a randomised piece of music and asked to rate the music "unpleasant" or "stimulating".They were then shown an identical second grey square but participants who rated their musical excerpt pleasant judged the square brighter than the people who rated their excerpt more negatively."Merely listening to happy or sad music affects subsequent brightness judgment," Bhattacharya said. ..