my own rant to add, unless you know the different notes of different instruments like the back of your hand, you're not gonna be that original. unless you have a particular instrument and make the sound you want yourself or pay someone to do it for you, your not gonna be that original.
reason is nothing more than a bunch of sampled instruments at whatever note. so that's basically a form of sampling right there. but this kind of sampling you can get away with i'd imagine. but this is also a good thing because these are instruments. fucking with an instruments notes, pitch, length, delay, and whatever else can easily give you a sound you've never heard. or an inspired sound from another song.
the other kind of sampling, the kind thats hip right now, is basically what guys like Kanye, Dr. Dre, Mannie Fresh, and DJ Uneek (my favorite of the category) do. and thats just a few mind you. taking old school song, maybe 4 or 5 seconds of it, and putting some drums or whatever to it. some of the ol' school cats don't appreciate it and might throw a fit. some see as a compliment. it's a toss. so make it legal when ya do it.
the other kind is just snatching a drum, snare, hi hat or whatever single sound from a song. like mentioned before it's rare that these are recognized as there so general and easy to tweak.
i will say that there's nothing more satisfying than coming as original as you can. but some older songs do sound tighter than anything present given a few claps and bricks.
long i know, but something else to put on your mind.