Instrument with K

• Keyboard

  Real musical instrument; you play its keys.

• Kick drum

  A bass drum; real instrument used in kits.

• Kettle drum

  Another name for timpani; a real drum.

• kazoo

  Simple wind instrument that hums.

• Keys

  Real tools for locks; tools count as instruments.

• Klaxon

  A horn device; a signaling instrument, real.

• kettle drums

  Plural is fine; real drums used in orchestras.

• kettledrum

  Valid name for a timpani drum instrument.

• Keyboards

  Plural is fine; real musical instruments.

• kick

  Common slang for kick drum; valid instrument.

• key

  Real tool for locks; tools count as instruments.

• Kokomo
• Keyboard piano
• Katana
• Keep
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• karaoke machine
• kale
• Knocker

The words in the list Instrument with K come from players of the word game City, Country, River.