Possible Clues:

• Fiddle's kin
• Bass's relative
• Instrument in the violin family
• Small group not one involved in a large-scale fiddle
• Member of a chamber group
• Instrument that could make mobile ring
• Instrument could indicate hail, given another tap
• Large instrument
• Instrument in monk's room, old
• Yo-Yo Ma's Petunia, e.g