The washtub bass used was constructed to be sampled. Instead of a shovel handle, it was built using a strong solid maple neck and a resonant 15-gallon washtub for the bowl. To help fit the bass into mixes, every sample was recorded using both a "high" and a "low" mic. The high mic was placed near the plucking area of the neck and the low mic was placed near the opening of the washtub, down below. The mics are mixable so users can achieve just the sound desired - higher for more pitch definition or lower for more percussive boominess.
With up to 4x round-robin and multiple articulations, Front Porch Washtub Bass is designed to be easy to play and authentic-sounding.
The following video demonstrates FPWB's various articulations in an old standard song: