Possible Clues:

• Six musicians
• Tsetse (anag.)
• Part of a sonnet, perhaps
• Last six lines of a sonnet, often
• One of three in Byron's 'She Walks in Beauty'
• It follows the octave in an Italian sonnet
• Verse form first used by Petrarch
• Part of some sonnets
• Type of stanza
• Insect's legs, e.g