Invented and patented by Leon Gruenbaum,
this is not your ordinary MIDI controller.
Each key on the keyboard
does not denote a fixed pitch, as it would on a normal keyboard,
but rather a change of pitch. For example a key might be the "+1"
key, which when pressed would sound the note one higher than the
last note played; another might be "-2", and so on.
By playing these
two keys in rapid succession, for example, one can play a pattern
that spirals down the keyboard.
Also the user is able to select
from a number of scales, including microtonal scales and key signatures.
A pattern, or "harmonic contour", once learned, can then be played
in any key or scale without needing to relearn fingering.
Click here to a sample
of the Samchillian Tip Tip Tip Cheeepeeeee. Since it is a MIDI controller,
there is no distinct sonic character to the instrument.
sample reveals a bit about the instruments character, and the unusual
patterns and phrases it creates.
Visit Leon's website to learn more
about the instrument, Leon's band Math Camp and his other projects