Possible Clues:

• Guitarlike instrument
• Instrument that's lifted things out of one's mouth
• Madrigal accompaniment, perhaps
• Accompaniment for a madrigal
• One instrument or another not to be played loudly
• Troubadour's prop
• Balladeer's aid
• Instrument left with Victorian pick-up
• Sir Thomas Wyatt's obeys
• Shakespearean instrument