You expect musicians to be very particular about acoustics and the way things sound. Which is why it comes as no surprise that The Royal Academy of Music - Manchester have specified Norsound seals (Available in our Acoustic Door Seals section) as a solution to their acoustic needs.
To purchase Norsound acoustic seals click here: http://www.firesealshop.com/Category/59-acoustic-door-seals.aspx
http://www.ram.ac.uk/ - Royal Academy of Music website.