Related Clues:

• "Don Giovanni" and "Don Pasquale"
• Many old masters
• Quiets, as a squeak
• Gluck works
• Van Gogh works
• Cottonseed et al.
• Mondrian medium
• Makes less squeaky, perhaps
• Many works at the Met
• Met offerings
• Works on canvas
• Olive and others
• Some hair products
• Lubes
• Makes slick, in a way