The Continuum Fingerboard's metal instruments use a feedback filter to simulate the tonal resonance and acoustical effects of interacting with a metal bar.
Like the other physical modeled instruments in the Continuum Fingerboard, the Metal instruments in the Continuum Fingerboard are not designed to emulate a particular instrument per se, but are created to be an evocative unique musical experience in their own right.
The example below was performed using the Continuum Fingerboard's Metal Bar instrument.