To: Mr. Park Joon-young
Re: Instrument Care

This is the dated approach to wipe the keyboard.

Recommendation for the new method (as shown below) to wipe the keyboard for the future.

Please let me know if the message is received via demonstrations (note: plural) in the next 8 episodes. Thank you in advance for your timely and detailed attention on this crucial matter that is important for the health of the DB community.