Pastabass by Karoryfer Samples. Samples of a Squier Bass VI recorded by KVR user spacecoyote, editing and mapping by D. Smolken.

SFZ mappings and WAV files. Requires Plogue Sforzando version 1.809 or newer for all the controls to function, but the basic one-voice mappings should be usable with any SFZ-compatible sampler. Free download, open source and royalty-free for all commercial and non-commercial use, including conversion into other sampler formats and redistribution as part of larger sample libraries.

spaghetti - roundwound strings
linguine - flatwound strings, picked, bridge pickup
tagliatelle - flatwound strings, picked, muted, pickup combo
fetuccine - flatwound strings, fingered, neck pickup

The originally released version was supposed to have 24-bit WAV files but was actually a mix of 32 and 24, which is not a good idea. So here everything's converted to 16 bits.