Possible Clues:

• Pansy-like plant
• Lover of Orsino in 'Twelfth Night'
• Player takes a bow for this female Shakespearean role
• Something that might be tucked under the chin
• 'Twelfth Night' character
• Bloomer - it's a big fiddle!
• Sebastian's sister takes a bow
• The heroine of Twelfth Night was so blooming stringy
• Musical instrument 'Twelfth Night' character
• Instrument slightly larger than violin and of lower pitch