They use musical ideas and motifs that are inspired by the nation which they are composing for. This usually comes from the folklore tradition and incorporates not only various themes, but also various instruments. For example, a Scottish national composition would surely include bagpipes as an instrument since it's traditionally associated with the area.
Andrea del Verrocchio, Boudin, Leonardo da Vinci, Perugino, Ghirlandaio and Sandro Botticelliare some of the people that influenced Michelangelo's early works of art.
