The need to practice at odd times and in odd places over the years (and the lack of a suitable mute) was the reason Trevor Bremner designed the sshhmute. In development over several years in his New Plymouth workshop, the sshhmute is now in full commercial production and has been successfully launched to meet the market need for an effective mute for brass instruments.

The unique design creates minimal back pressure allowing the throat muscles to achieve better control, providing better air supply and flow, while also being precise and sensitive throughout the range.