3597197 The Music Lesson, c.1760 (oil on copper) by Longhi, Pietro (c.1701-85); 44.6x57.6 cm; Walters Art Museum, Baltimore, USA; (add.info.: An elderly music teacher takes advantage of the interruption caused by servants to squeeze the hand of his young pupil in front of the pianoforte. The little dog, a traditional symbol of faithfulness, with its raised paw, mirrors his gesture, almost as a parody of the old man\'s furtive expression of desire. ).