Hello,

My name is Keyvan Safinya. I've created an inexpensive muffler system for grand pianos that can be installed in 10 minutes. If you're interested, it's $25 per pledge/kit, and the link is:

https://www.kickstarter.com/projects...eated_projects

I sincerely hope all serious pianists can benefit from what I made. It allows you to play at all hours without bothering anyone. A demonstration is on the site. Thanks!