Possible Clues:

• Lead maybe with a Beatles melody -- just the first bit played
• In clutches of sex god, model meets copper
• Dishonest copper for one; this isn't rare
• Corrupt spy chief and others lead, for example
• Copper perhaps found lead, for example
• Not being noble, it soon tarnishes
• Alloy's principal component
• Copper, say, has contemptible spirit, we hear
• Maybe iron, copper and others supporting beams in disrepair
• 6 is a degree over excited Maltese