Possible Clues:

• Popular musical items of the '20s
• Certain four-stringers, briefly
• Instruments from 119-Across
• Godfrey's instruments
• Sopranos and concerts, e.g.
• Little strings?
• Luau instruments, briefly
• Chordophones, for short
• Instruments that may be made from monkeypod wood
• Four-stringed island instruments