Free: Sneakybass
The same bass sampled in Vengeful Bass, Meatbass and a few other times besides, this time played pizzicato at sneaky late night practice volume. The resulting sound is about as warm as double bass gets. WAV samples, SFZ mappings and Sforzando GUI.
Plucks, ghost notes, fingering noises, muting and release noises sampled across three octaves add up to a 324 MB download. Walkthrough video: