Possible Clues:

• Rock singer is the French number one after learning ...
• Siren of German legend who lured boatmen to destruction
• Attractive female given garland - learning to take the lead
• The German rock singer teaching the French one
• Loos' Lee
• Legendary siren of the Rhine
• Sounds as if Laura would not stand being a menace on the Rhine
• Loos character
• Fatal attraction of ancient learning? A falsehood, I'd say
• Legendary temptress