What was the answer to the jeopardy category musical instrument?

The best answer to your question seems to be the final Jeopardy question from Oct 20 2009. Here are the category, question and answer for that date.

MUSICAL INSTRUMENTS

In the early 18th c. Sylvius Leopold Weiss wrote works for these 2 instruments whose names rhyme

the Flute and the lute

I was able to find another question from Final Jeopardy on March 7 2000 in the same category and provide the same information.

MUSICAL INSTRUMENTS

Newly discovered, perhaps the oldest playable instrument is one of these, made from a crane's bone

Flute