I read from contour to contract.

The word of the episode is "contrabassoon".

https://en.wikipedia.org/wiki/Contrabassoon

The sound clips are from these videos: 

Luke Whitehead teaches you about the Bassoon: https://youtu.be/JVAe7YBUc6c

Ravel's "Conversations Between Beauty and the Beast": https://youtu.be/oSgGuakoHZY

Bassoon and Contrabassoon playing together: https://youtu.be/0xSlEe9i2A4

Here are more videos about the con ...