Holger Mack Mack for Trumpet

Anyone using the James Thompson Buzzing Book, or any other regular buzzing as part of their practice, will find benefits to using this resistance-free mouthpiece mount. In my opinion the free-blowing nature of it makes it the best option for combined buzzing & finger practice and there's never an issue with water build-up, unlike other items such as the B.E.R.P.

Very very good. Much better than B.E.R.P. and you can try and even play different leadpipes if you put it to hold the unsoldered leadpipe together with the tuning slide.