Leonardo's only known male portrait, an unfinished work c.1483-1487 from his first Milan stay. A young man holds folded sheet music revealed during 1905 restoration. The sitter's identity is debated: Franchino Gaffurio, Atalante Migliorotti, or Josquin des Prez.

Marks a shift from Milan's profile portraiture toward the three-quarter view influenced by Antonello da Messina. Only the face and hair are fully resolved, displaying Leonardo's characteristic sfumato.

Kenneth Clark called it perhaps the best preserved of Leonardo's surviving works. At the Pinacoteca Ambrosiana in Milan since at least 1672.