There was a disc called Stakatto, and probably another (Stakatto 2) which, in addition to things like telephones, breaking glass, cars, planes, bowling alleys and the like, also had a number of tracks featuring solo instruments, including different makes of pianos, double bass, etc. Well-recorded, too. Not quite what you're looking for, perhaps, but interesting.
Instruments of the Orchestra
Fellow classical music buffs, can any of you recommend a CD (or couple of CDs) that provide a good introduction to the instruments of the orchestra? What I have in mind would be a well-recorded demonstration of each instrument, from its highest to its lowest pitch, and possibly a brief musical example. Doesn't need to be long or elaborate. Also, here's a related question: can any of you recommend a musical reference book that gives the full frequency range of the fundamental tones of each instrument of the orchestra? Thanks.