Related Clues:

• Tchaikovsky's "Souvenir de Florence," e.g
• Group of relations mostly head for France
• Extremely suggestive text sent to musicians
• Elements of Petrarchan sonnets
• Grandmaster Flash and the Furious Five, for example
• Six-line poetry stanzas
• Group adds short extension to their standard musical numbers
• Group of half a dozen musicians ( X, not S )
• Ends of sonnets
• Three couples send rude message — and in French
• Stanzas of six lines
• Segments of sonnets