In order to simplify the experience as much as possible we designed the pBuzz to be a brass instrument that has only one of its many series of notes (harmonics) available to use. We chose the lowest (fundamental or pedal harmonic) as it is the easiest way to make your first sound.
The choice of this series of notes was complimented by the pBuzz mouthpiece, which is very large in comparison to the length of the instrument. What this means is that the player can only play one pitch on their pBuzz at any length of the instrument.
What this means is that it focuses players' learning on producing good sound, articulation and learning to change pitch in small steps by changing the instrument length. pBuzz is in essence a very small trombone that plays only on its pedal range and can play the pitches F to C in concert pitch. This range is instantly transferable to a Bb or Eb trombone, or valved brass instrument.
How is this different to pBugle?
In comparison the pBugle focuses its attention on the other core brass skill for changing pitch; moving from one harmonic or partial to another. Compared to pBuzz the instrument is a fixed length, and it in a concert Bb.
You may not realise it, but you will most likely be familiar with the series of notes that a bugle call uses - these are the notes of the harmonic series, and a brass player makes these sounds by controlling their lips and the air used to vibrate them.
The pBuzz has 'lower brass' (e.g trombone, tuba, euphonium) in its DNA and many 'upper brass' players (trumpet, flugelhorn, cornet), though welcoming the concept of a simple starter instrument, would prefer an instrument that is closer to 'their' instrument!
The pBugle is therefore essentially a valve-less Bb trumpet that focuses the learners attention on good sound production, articulation and changing pitch in large steps by choosing harmonics in a trumpet based format. The notes beginners would normally play are low Bb, F and upper Bb in concert pitch, and these notes are instantly transferable to a Bb valved instrument.