Beryllium Copper is the latest alloy on my list and tests are going quite well.

The sound, compared to brass, is slightly darker but also richer in terms of harmonics.

On "pianissimo" dynamics, the sound is warm and dark but as the volume increases, more and more sounds come to life and on "fortissimo" dynamics the sound gets brighter, powerful, warm and rich giving a very broad dynamic range.

18 beryllium copper jingles are combined with 18 german silver jingles curved in two different ways in order to get 2 different models.

XP-126 more staccato

XS-126 more legato.