Sample CDs are CDs comprised of individual hits and loops. Sample Cds are supposed to be high quality recordings of samples and loops played by great musicians which you can toss in your sampler or wav sequencer and play around with. Sample Cds are usually sold through advertising in music production magazines or web sites with low quality versions of the samples on the CD. Sample Cds are scary to start buying because you don’t really know what your getting. Its a business very much based on reputation. The few companies you do see in stores are horrid or have sounds that are too easy to recognize the source of or there use in pop music. On a whole sample CDs are way to expensive starting at around 50$(US) for total useless crap and ending in the thousands. IMHO If you want to keep it real dig through the crates find nice shit and sample it yourself.